Hey, Turtle Fans!
The Shell Squad Co-Op Update is live! For the full overview of what’s new, including the Trench Coat Pack and the new co-op powers, tools, and masteries, check out our announcement post. Below you’ll find the complete 2.1.0 patch notes with every new addition, gameplay update, and bug fix in detail. Thank you for all your feedback and support, and enjoy the update!
New Features
In 2.1.0, we have added support for a brand new skin set– Trench Coat Pack! These are available on all platforms, and once owned can be found in the Character Select screen. Enjoy your new disguises!
We also took this opportunity to add a small quality of life feature we have wanted for a long time– the ability to change your character (and skin!) to any available one from the Home Lair character swap station in Online Multiplayer and Couch Co-op. Stay connected with your teammates while updating your character in between runs.
We have also added new powers, tools, and masteries focused on deeper co-op gameplay. These can only be found in our Online Multiplayer and Couch Co-op modes, and they work across the original campaign, Arcade Mode, and Rat King. We have had a tremendous amount of fun playing with them, and we hope you do too.
Powers
Element | Name | Description |
Astral (Light) | Shared Warmth | When a player consumes a Splinter’s Revive, all players are healed for a portion of their Max Health. |
Astral (Light) | Splinter’s Grace | On picking this power, the player with the lowest current Health gains Max Health and is healed. |
Astral (Light) | Flash of Inspiration | When a player defeats an enemy afflicted by Blinding Light, that player’s Tool recharges by a percentage. |
Astral (Dark) | Dark Resonance | All players deal more damage to enemies affected by Darkness. |
Astral (Dark) | Shadow Finisher | All players’ Final Strike applies Darkness for a duration. |
Astral (Dark) | Dark Omen | At the start of a Boss fight, all players gain Dark Shell for a duration. |
Flame | Ignited Spark | When any player defeats an enemy affected by your Inferno, it explodes and deals Flame damage scaled from your Inferno’s damage. |
Flame | Passing the Torch | The first player you touch while you have Rapid Fire also gains its effects, for as long as your Rapid Fire stays active. |
Flame | Twin Blast | The closest player deals bonus Flame damage with their Special. This can trigger your Inferno. |
Robotics | Drone Reinforcement | When any player expends a Splinter’s Revive, a drone spawns to fight for the team for a duration. |
Robotics | Charge Amplifier | When your Robotics Charge Effect activates, the closest player’s damage increases by a percentage for the rest of the room. |
Robotics | Shared Charge | Your Robotics Charge Effect also triggers on the closest player. |
Ninja | Shuriken Avenger | When any player takes a hit, a Shuriken is automatically thrown at the attacker. |
Ninja | Kunai Assist | When any player deals damage with a Tool, a Kunai is thrown at the target for extra damage. |
Ninja | Adrenaline Resonance | When any player gains Adrenaline, all players gain Adrenaline stacks. |
Ooze | Slippery Floor | Enemies affected by Ooze deal less damage to players. |
Ooze | Safe Storage | All players’ Boosts last for additional rooms. |
Ooze | Goo Get Them! | All players gain additional Multi-hit against enemies affected by Ooze. |
Utrom | Voltage Spike | All players’ Tool damage applies Electrified stacks for a duration, limited by a per-player cooldown. |
Utrom | Conductor | When a player defeats an enemy, a Lightning Strike hits a nearby enemy for Utrom damage. |
Utrom | Chain Reaction | Players’ Specials have a chance to trigger a Chain Lightning that deals Utrom damage per link. |
Water | Ripple Effect | After landing a Still Waters Final Strike, the closest player’s next attack is a Final Strike with bonus Water damage. |
Water | Surfing Lesson | When you Dash through a player, they gain bonus Water damage per Torrent Stack you have, for a duration. |
Water | Cold Snap | When players attack enemies affected by Freeze, they deal additional Water damage. |
Tools
Element | Name | Description |
Astral (Dark) | Tool: Shadow Pact | Grants you and the closest player a Dark Shell for a duration. Each enemy defeated extends it. |
Astral (Light) | Tool: Sacred Shell | Grants all players a Light Shell and a damage boost for a duration. |
Flame | Tool: Ring of Fire | Summons a ring of fire at your position for a duration. It deals Flame damage over time to enemies, and players inside it deal bonus Flame damage. |
Ninja | Tool: Ricochet Star | Throws a Shuriken that bounces between you and the closest player several times. It pierces every enemy in its path and damages them. |
Ooze | Tool: Deluge of Ooze | For a duration, you and the closest player cause a burst of Ooze on each Final Strike. The burst deals damage and applies Ooze stacks to nearby enemies. |
Robotics | Tool: Synced Strike | For a duration, you and the closest player trigger a Photon Lance dealing damage on each Final Strike. |
Utrom | Tool: Tether Beam | Tethers you to the closest player for a duration. Enemies caught in the beam take Utrom damage over time. |
Water | Tool: Bubble Trouble | Spawns a bubble on you and the farthest player for a duration. The bubble deals Water damage and Freezes enemies, and gives players bonus Water damage. |
Masteries
Character | Description |
Alopex | For each enemy defeated by your Special, all players gain Adrenaline stacks. |
Casey Jones | Your Special Puck also bounces off players freely without using up ricochets. Each player it hits gets a random Light or Dark Shell for a duration. |
Donatello | When you use your Tool, the closest player becomes invulnerable for a duration. |
Leonardo | When you activate your Special, the closest player gains Light Shell for a duration. |
Metalhead | Your Dash Attack projectile applies Overdrive for a duration to other players it passes through. |
Michelangelo | When you use your Special, you and the closest player each gain a Torrent Strike stack. |
Raphael | When any player lands a critical hit, they have a chance to Multi-crit instead. |
Slash | While enraged, other players gain bonus movement speed and bonus damage. |
To facilitate these changes, we have another fun update:
There is now a “Tool Pack” as an option when selecting a Room Reward and in the Shop. This will expand into a secondary screen with Tool options to choose from, similar to how Power rewards work.
Lucky Dice have become more and more important to gameplay as we added Arcade Mode and the Rat King’s Realm. To that end, we have improved the communication around them so that newer players can more easily understand and benefit from them.
- You can now see when Lucky Dice are earned with a small display in the HUD
- Sold out options in the Shop now show a “Use Lucky Dice to reroll” state
- Visual appearance of using Lucky Dice has been updated to more clearly reflect what they do
Other Updates
- Flame VFX across the board have had a revamp on their appearance to improve their visual quality.
- Clicking the character portraits on the HUD no longer opens run details.
- Run Details can still be opened on keyboard/mouse by pressing Tab, or opening the escape menu and selecting “Run Details”
- The AFK kick timer has been increased from 5 minutes to 10 minutes.
Bugs fixed:
- Gigi hit the gym again and her health for normal and gauntlet versions in the campaign are no longer drastically lower than intended.
- The host’s narrative state is no longer overriding the guest’s narrative state in online multiplayer.
- This should prevent issues where conversations that the guest had already triggered in solo or while hosting a game would re-trigger after being in a game where the host had not triggered those conversations.
- A side effect of this, however, is that if you see a conversation for the first time as a guest in online multiplayer, that conversation can still trigger when playing solo or hosting a game when the criteria is met.
- This change should also fix players who are currently stuck unable to complete Alopex’s narratives.
- The Polar Bear Netsuke artifact should no longer end up in a state where it cannot be unlocked. Players already in this state should now be able to retrigger the narratives between Alopex and Karai to unlock the artifact.
- Fixed a crash that occurred in couch co-op when all characters except one were set to an unowned skin before selecting that one character.
- The Junkinator is no longer being stingy and now has a chance to grant lucky dice if the ‘Lucky Spoils’ dreamer upgrade has been purchased.
- Users should no longer be incorrectly sent to the tutorial version of the home lair whenever they start a new run if they skipped the tutorial at specific points.
- Characters should no longer be spawning in a pile in Arcade Mode or Rat King challenges in online mp or couch co-op
- Having the Clan Hamato Seal equipped when starting or joining a Gauntlet Rat King challenge no longer consumes the revive provided by the artifact.
- Revival Astral Power should no longer incorrectly appear as level 2
- Drone tools are no longer erroneously being locked behind Metalhead DLC ownership.
- The Tempered Shuriken legendary power should now also apply to the Kunai tool.
- Confidence is now properly granted when defeating the Giant Rat King fight without taking damage if the Confidence Dragon upgrade has been purchased.
- Players should no longer be able to transition to Karai’s Ship mid-conversation, which should reduce the likelihood of it spawning the invulnerable totem boss instead of Karai.
- Mouse clicks should no longer cause controller players to attack towards that location in couch co-op.
- Several client and server crash fixes that could occur under very specific circumstances.

