Co-Op Challenge
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Co-Op Challenge is an event where bonus rewards are given for beating Boss Battles in Co-op mode on certain days, and further rewards are given via missions to defeat a target number of Co-op battles.
Event Periods
- Season 1: 05:00, Oct 20 2021 – 19:59, Nov 20 2021 (UTC)
- Season 2: 05:00, Dec 08 2021 - 13:59, Dec 20 2021 (UTC)
- Season 3: 05:00, Jan 12 2022 - 16:00, Jan 27 2022 (UTC)
- Season 4: 05:00, Jan 31 2022 - 16:00, Feb 12 2022 (UTC)
- Season 8: New Year Co-Op Challenge Event
- Season 9: Sep 29, 2022 09:00 – Oct 07, 2022 11:59 (UTC)
- Season 10 : Oct 24, 2022 05:00 – Nov 03, 2022 11:59 (UTC)
- Season 11: Jan 16, 2023 05:00 – Jan 28, 2023 11:59 (UTC)
- Season 12: Feb 27, 2023 05:00 – Mar 09, 2023 11:59 (UTC)
- Season 13: May 09, 2023 05:00 – May 19, 2023 11:59 (UTC)
- Season 14: July 24, 2023 05:00 – August 01, 2023 11:59 (UTC)
- Season 15 (Autumnal): September 12, 2023 05:00 – September 22, 2023 11:59 (UTC)
- Season 16 (Princess Connect! Re: Dive Crossover): September 27, 2023 05:00 – October 10, 2023 11:59
- Season 17: November 9, 2023 05:00 – November 26, 2023 04:59 (UTC)
Schedules
Season 17
| Schedule (UTC) | Boss |
|---|---|
| November 9, 2023 05:00 – November 26, 2023 11:59 | Garnet Queen |
| November 9. 2023 05:00 – November 9, 2023 19:59 | Spiteful Aberration |
| November 9, 2023 20:00 – November 10, 2023 19:59 | Regitare, Undead Lord |
| November 10, 2023 20:00 – November 11, 2023 19:59 | Whitetail |
| November 11, 2023 20:00 – November 12, 2023 19:59 | Hermit King |
| November 12, 2023 20:00 – November 13, 2023 19:59 | Dorsal Brothers |
| November 13, 2023 20:00 – November 14, 2023 19:59 | The Administrator |
| November 14, 2023 20:00 – November 15, 2023 19:59 | Spiteful Aberration |
| November 15, 2023 20:00 – November 16, 2023 19:59 | Arch Accursed |
| November 16, 2023 20:00 – November 17, 2023 19:59 | Orochi |
| November 17, 2023 20:00 – November 18, 2023 19:59 | Aero Cavalry |
| November 18, 2023 20:00 – November 19, 2023 19:59 | Whitetail |
| November 19, 2023 20:00 – November 20, 2023 19:59 | Hermit King |
| November 20, 2023 20:00 – November 21, 2023 19:59 | Sec-5200Li |
| November 21, 2023 20:00 – November 22, 2023 19:59 | Spiteful Aberration |
| November 22, 2023 20:00 – November 23, 2023 19:59 | Nether Fox |
| November 23, 2023 20:00 – November 24, 2023 19:59 | Orochi |
| November 24, 2023 20:00 – November 25, 2023 19:59 | Dorsal Brothers |
| November 25, 2023 20:00 – November 26, 2023 11:59 | Spiteful Aberration |
Season 16
| Schedule (UTC) | Boss |
|---|---|
| September 27, 2023 20:00 – October 10, 2023 11:59 | Arc Guardian |
| September 27, 2023 20:00 – September 27, 2023 19:59 | Orochi |
| September 27, 2023 20:00 – September 29, 2023 19:59 | Ancient Golem |
| September 29, 2023 20:00 – October 1, 2023 19:59 | Scorched Grizzly |
| October 1, 2023 20:00 – October 3, 2023 19:59 | Hermit King |
| October 3, 2023 20:00 – October 5, 2023 19:59 | Dorsal Brothers |
| October 5, 2023 20:00 – October 7, 2023 19:59 | Regitare, Undead Lord |
| October 7, 2023 20:00 – October 9, 2023 19:59 | Aero Cavalry |
| October 9, 2023 20:00 – October 10, 2023 11:59 | Orochi |
Season 15
| Schedule (UTC) | Boss |
|---|---|
| September 12, 2023 05:00 – September 22, 2023 11:59 | Garnet Queen |
| September 12, 2023 05:00 – September 12, 2023 19:59 | Dorsal Brothers & Lightning Hollow |
| September 12, 2023 20:00 – September 13, 2023 19:59 | Scorched Grizzly & Ignis Cryptkeeper |
| September 13, 2023 20:00 – September 14, 2023 19:59 | Tidal Kraken & Regitare, Undead Lord |
| September 14, 2023 20:00 – September 15, 2023 19:59 | Orochi & Whitetail |
| September 15, 2023 20:00 – September 16, 2023 19:59 | The Administrator & Lightning Hollow |
| September 16, 2023 20:00 – September 17, 2023 19:59 | Arch Accursed & Ignis Cryptkeeper |
| September 17, 2023 20:00 – September 18, 2023 19:59 | Hermit King & Tidal Kraken |
| September 18, 2023 20:00 – September 19, 2023 19:59 | Orochi & Ancient Golem |
| September 19, 2023 20:00 – September 20, 2023 19:59 | Aero Cavalry & Lightning Hollow |
| September 20, 2023 20:00 – September 21, 2023 19:59 | Sec-5200Li & Ignis Cryptkeeper |
| September 21, 2023 20:00 – September 22, 2023 11:59 | Nether Fox & Tidal Kraken |
Season 14
| Schedule (UTC) | Boss |
|---|---|
| July 24, 2023 05:00 – August 01, 2023 11:59 | Garnet Queen |
| July 24, 2023 05:00 – July 24, 2023 19:59 | Dorsal Brothers & Regitare, Undead Lord |
| July 24, 2023 20:00 – July 25, 2023 19:59 | Scorched Grizzly & Ancient Golem |
| July 25, 2023 20:00 – July 26, 2023 19:59 | Aero Cavalry & Hermit King |
| July 26, 2023 20:00 – July 27, 2023 19:59 | Dorsal Brothers & Arch Accursed |
| July 27, 2023 20:00 – July 28, 2023 19:59 | Scorched Grizzly & Whitetail |
| July 28, 2023 20:00 – July 29, 2023 11:59 | Aero Cavalry & Sec-5200Li |
| July 29, 2023 20:00 – July 30, 2023 11:59 | Dorsal Brothers & The Administrator |
| July 30, 2023 20:00 – July 31, 2023 11:59 | Scorched Grizzly & Nether Fox |
| July 31, 2023 20:00 – August 01, 2023 11:59 | Aero Cavalry & Orochi |
Season 13
| Schedule (UTC) | Boss |
|---|---|
| May 09, 2023 05:00 – May 19, 2023 11:59 | Azure Queen |
| May 09, 2023 05:00 – May 11, 2023 11:59 | Ancient Golem |
| May 11, 2023 05:00 – May 13, 2023 11:59 | Regitare, Undead Lord |
| May 13, 2023 05:00 – May 15, 2023 11:59 | Whitetail |
| May 15, 2023 05:00 – May 17, 2023 11:59 | Hermit King |
| May 17, 2023 05:00 – May 19, 2023 11:59 | Arch Accursed |
| May 19, 2023 05:00 – May 19, 2023 11:59 | The Administrator |
Season 12
| Schedule (UTC) | Boss |
|---|---|
| Feb 27, 2023 05:00 – Mar 09, 2023 11:59 | Azure Queen |
| Feb 27, 2023 05:00 – Feb 28, 2023 19:59 | Nether Fox |
| Feb 28, 2023 20:00 – Mar 02, 2023 19:59 | Sec-5200Li |
| Mar 02, 2023 20:00 – Mar 04, 2023 19:59 | Nether Fox |
| Mar 04, 2023 20:00 – Mar 06, 2023 19:59 | Sec-5200Li |
| Mar 06, 2023 20:00 – Mar 08, 2023 19:59 | Nether Fox |
| Mar 08, 2023 20:00 – Mar 09, 2023 11:59 | Sec-5200Li |
Season 11
| Schedule (UTC) | Boss |
|---|---|
| Jan 16, 2023 05:00 – Jan 28, 2023 11:59 | Azure Queen |
| Jan 16, 2023 05:00 – Jan 17, 2023 19:59 | Whitetail |
| Jan 17, 2023 20:00 – Jan 19, 2023 19:59 | Lightning Hollow |
| Jan 19, 2023 20:00 – Jan 21, 2023 19:59 | Regitare, Undead Lord |
| Jan 21, 2023 20:00 – Jan 23, 2023 19:59 | Whitetail |
| Jan 23, 2023 20:00 – Jan 25, 2023 19:59 | Lightning Hollow |
| Jan 25, 2023 20:00 – Jan 28, 2023 11:59 | Regitare, Undead Lord |
Event Details
Season 17
- Participate in the Co-Op Challenge by defeating bosses in multiplayer battles according to the schedule below.
- Boss Coins, EXP, and Mana obtained will be 1.5 times the usual amount.
- Co-Op Challenge event items/armaments are available for exchange until November 26, 11:59 (UTC).
- Event items and armaments will be added during the event period.
- Some event items/armaments are exchangeable for half the usual amount of boss coins during the event period.
- The exchangeable items and armaments added to the Boss Coin Exchange during the event period will not be renewed on the last day of every month at 20:00 (UTC).
- Please note that only one event armament lineup can be selected for exchange during the event period. After selecting, it's not possible to change armament lineups.
Season 16
- Participate in the Co-Op Challenge by defeating bosses in multiplayer battles according to the schedule below.
- Boss Coins, EXP, and Mana obtained will be 1.5 times the usual amount.
- Co-Op Challenge event items/armaments are available for exchange until October 10, 11:59 (UTC).
- Event items and armaments will be added during the event period.
- Some event items/armaments are exchangeable for half the usual amount of boss coins during the event period.
- The exchangeable items and armaments added to the Boss Coin Exchange during the event period will not be renewed on the last day of every month at 20:00 (UTC).
- Please note that only one event armament lineup can be selected for exchange during the event period. After selecting, it's not possible to change armament lineups.
Season 15
- Participate in the Co-Op Challenge by defeating bosses in multiplayer battles according to the schedule below.
- Boss Coins, EXP, and Mana obtained will be 2 times the usual amount.
- Co-Op Challenge event items/armaments are available for exchange until September 22, 11:59 (UTC).
- Event items and armaments will be added during the event period.
- Some event items/armaments are exchangeable for half the usual amount of boss coins during the event period.
- The exchangeable items and armaments added to the Boss Coin Exchange during the event period will not be renewed on the last day of every month at 20:00 (UTC).
- Please note that only one event armament lineup can be selected for exchange during the event period. After selecting, it's not possible to change armament lineups.
Season 14
- Participate in the Co-Op Challenge by defeating bosses in multiplayer battles according to the schedule below.
- Boss Coins, EXP, and Mana obtained will be 1.5 times the usual amount.
- Co-Op Challenge event items/armaments are available for exchange until August 01, 11:59 (UTC).
- Event items and armaments will be added during the event period.
- Some event items/armaments are exchangeable for half the usual amount of boss coins during the event period.
- The exchangeable items and armaments added to the Boss Coin Exchange during the event period will not be renewed on the 1st of every month at 20:00 (UTC).
- Please note that only one event armament lineup can be selected for exchange during the event period. After selecting, it's not possible to change armament lineups.
Event Missions
Season 17
Daily Missions
| Requirement | Reward |
|---|---|
| Co-op Challenge: Clear multiplayer boss battles x1 |  Limited-Time Stamina Swig x1
|
| Co-op Challenge: Clear multiplayer boss battles x2 |  Lilac Nugget x30
|
| Co-op Challenge: Clear multiplayer boss battles x3 |  Lodestar Beads x30
|
Missions
| Requirement | Reward |
|---|---|
| Clear multiplayer battles x1 |  Summoning Ticket x1
|
| Clear multiplayer battles x2 |  Dreamer's Crest x20
|
| Clear multiplayer battles x3 |  Mana x100,000
|
| Clear multiplayer battles x5 |  Golden Skulls x1
|
| Clear multiplayer battles x7 |  EXP x60,000
|
| Clear multiplayer battles x10 | Summoning Ticket x1
|
| Clear multiplayer battles x15 |  Armament Ticket x1
|
| Clear multiplayer battles x20 | Summoning Ticket x1
|
| Clear multiplayer battles x25 | Dreamer's Crest x20
|
| Clear multiplayer battles x30 | Armament Ticket x1
|
| Clear multiplayer battles x35 | Armament Ticket x2
|
| Clear multiplayer battles x40 | Armament Ticket x3
|
| Clear multiplayer battles x45 | Dreamer's Crest x20
|
| Clear multiplayer battles x50 | Lodestar Beads x150
|
| Clear multiplayer battles x60 | Summoning Ticket x2
|
| Clear multiplayer battles x70 | Lodestar Beads x150
|
| Clear multiplayer battles x80 |  5★ Astral Gem x1
|
Season 16
Daily
| Requirement | Reward |
|---|---|
| Co-op Challenge: Clear multiplayer boss battles x1 | Limited-Time Stamina Swig x2
|
| Co-op Challenge: Clear multiplayer boss battles x2 |  Lilac Arch Guardian Denarius x5
|
| Co-op Challenge: Clear multiplayer boss battles x3 | Dreamer's Crest x5
|
| Co-op Challenge: Clear multiplayer boss battles x4 | Lodestar Beads x30
|
Event
| Requirement | Reward |
|---|---|
| Clear multiplayer battles x1 |  Trick Gift x1
|
| Clear multiplayer battles x2 |  Cosmo Blue Rod x1
|
| Clear multiplayer battles x3 |  Big Bunny Blade x1
|
| Clear multiplayer battles x5 | Mana x100,000
|
| Clear multiplayer battles x7 | Summoning Ticket x1
|
| Clear multiplayer battles x10 | EXP x60,000
|
| Clear multiplayer battles x15 | Summoning Ticket x1
|
| Clear multiplayer battles x20 | Armament Ticket x2
|
| Clear multiplayer battles x25 | Summoning Ticket x1
|
| Clear multiplayer battles x30 | Golden Skull x1
|
| Clear multiplayer battles x35 | Armament Ticket x3
|
| Clear multiplayer battles x40 | Summoning Ticket x2
|
| Clear multiplayer battles x45 |  10-Pull Armament Ticket x1
|
| Clear multiplayer battles x50 | Lodestar Beads x150
|
| Clear multiplayer battles x60 | Summoning Ticket x2
|
| Clear multiplayer battles x70 | Lodestar Beads x150
|
| Clear multiplayer battles x80 | 5★ Astral Gem x1
|
- New daily missions will be added to [Home] > [Mission] > [Event].
- Clear the new event missions and claim various rewards.
- Defeat each boss to claim [Silver Denarius], [Gold Denarius], and [Lilac Denarius], which can be exchanged for various items necessary for adventure, including the event armament 5★ [Trick Gift].
- Some event missions require Main Quest progress.
- The increase in rewards for this event is calculated separately from the increase by Boss Boosts.
- Event missions can only be cleared during the event period.
- Event details may be subject to change without prior notice.
Season 15
- New daily missions will be added to [Home] > [Mission] > [Event].
- Clear the new event missions and claim various rewards.
- Defeat each boss to claim [Silver Denarius], [Gold Denarius], and [Lilac Denarius], which can be exchanged for various items necessary for adventure, including the event armament 5★ [Fission Blade].
Season 14
- New daily missions will be added to [Home] > [Mission] > [Event].
- Clear the new event missions and claim various rewards.
- Defeat each boss to claim [Silver Denarius], [Gold Denarius], and [Lilac Denarius], which can be exchanged for various items necessary for adventure, including the event armament 5★ [Fission Blade].
- * The details of the new armament will be available after the update on July 24th.
Season 12/13
- New daily missions will be added to [Home] > [Mission] > [Event].
- Clear the new event missions and claim various rewards.
- Defeat each boss to claim [Silver Denarius], [Gold Denarius], and [Lilac Denarius], which can be exchanged for various items necessary for adventure, including the event armament
5★ Sabre d'Eau.
Rewards
Season 17
- when 6 or more Fire units are in the party → + 40 % to Power Flip damage
Season 16
Season 14/15
- when 6 or more Fire units are in the party → + 40 % to Power Flip damage
Season 12/13
- when 6 or more Water units are in the party → +40 % to Power Flip damage
Season 11
- when 6 or more Water units are in the party → +40 % to Power Flip damage
Season 10
- Water characters' direct attack damage +30% / For every ATK buff on a water character, that character's direct attack damage +15% [MAX: +45%]
Season 9
- every 30 time(s) a direct hit is dealt by Dark unit → +6 % to direct hit damage for Dark unit (Max +60 %)
- a skill is activated by Water unit → +6.25 % to skill damage for this unit (Max +75 %) / the combo reaches 30 → the first 3 time(s): +10 % to Skill Gauge for this unit
Season 4
- If self is a thunder character, when combo count reaches 40, own ATK +25% [MAX: +150%]
- When a water character's skill activates, own skill damage +12.5% [MAX: +150%] / When 30 combo, own skill gauge +20% for up to 3 times
Season 3
- If self is a wind character, every 40 combo, own skill damage +25% [MAX: +250%]
- When fire characters' skill activates, fire characters' skill damage +7% [MAX: +70%] / When 30 combo, own skill gauge +10% for up to 7 times
Season 1 & 2
- Gives +50% skill gauge to dark units if used as a main. She also buffs dark units every time she activates her own skill, and her skill damage gets buffed whenever a dark character uses their skill.
- When a dark character's skill activates, own ATK +10% [MAX: +100%] / When battle begins, own skill gauge +40%
Eligibility & Disclaimer
Season 17
- You will need to clear Chapter 1, Stage 4-2 of the Main Quest to participate in the Co-Op Challenge.
- Boss Denarii can be exchanged for useful items in the [Item Exchange] for each corresponding Boss Battle or in [Shop] > [Boss Item Exchange].
- Co-Op Challenge event items will be available for exchange until November 26, 11:59 (UTC).
- The event boss Garnet Queen will appear in the future, and its Denarii will remain after the event period.
- Event details may be subject to change without prior notice.
Season 16
- You will need to clear Chapter 1, Stage 4-2 of the Main Quest to participate in the Co-Op Challenge.
- Boss Denarii can be exchanged for useful items in the [Item Exchange] for each corresponding Boss Battle or in [Shop] > [Boss Item Exchange].
- Co-Op Challenge event items will be available for exchange until October 10, 11:59 (UTC).
- The event boss Garnet Queen will appear in the future, and its Denarii will remain after the event period.
- Event details may be subject to change without prior notice.
Season 15
- You will need to clear Chapter 1, Stage 4-2 of the Main Quest to participate in the Co-Op Challenge.
- Boss Denarii can be exchanged for useful items in the [Item Exchange] for each corresponding Boss Battle or in [Shop] > [Boss Item Exchange].
- Co-Op Challenge event items will be available for exchange until September 22, 11:59 (UTC).
- The event boss Garnet Queen will appear in the future, and its Denarii will remain after the event period.
- Some event missions require Main Quest progress.
- The increase in rewards for this event is calculated separately from the increase by Boss Boosts.
- Event missions can only be cleared during the event period.
- The event armament 5★ [Fission Blade], [Kadoma-II], and [Bow of Supplication] may appear in the future.
- Event details may be subject to change without prior notice.
Season 14
- You will need to clear Chapter 1, Stage 4-2 of the Main Quest to participate in the Co-Op Challenge.
- Boss Denarii can be exchanged for useful items in the [Item Exchange] for each corresponding Boss Battle or in [Shop] > [Boss Item Exchange].
- Co-Op Challenge event items will be available for exchange until August 01, 11:59 (UTC).
- The event boss Garnet Queen will appear in the future, and its Denarii will remain after the event period.
- Event details may be subject to change without prior notice.
- Some event missions require Main Quest progress.
- The increase in rewards for this event is calculated separately from the increase by Boss Boosts.
- Event missions can only be cleared during the event period.
- The event armament 5★ [Fission Blade] may appear in the future.
- Event details may be subject to change without prior notice.