Version 2.1, officially the Malaise Update, is a major update to Dead Cells that was released on the 21st of December 2020 to PC, on the 28th of January 2021 for the Xbox One, and on the 15th of February 2021 for the PlayStation 4 and the Nintendo Switch. The Malaise Update completely revamped how the Malaise mechanic works, such that it progressively increases as time goes on rather than being inflicted when the player is hit. Additionally, the backpack mechanic was reworked into a meta upgrade
The Collector - Dead Cells Wiki
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Version 3.3 - Official Dead Cells Wiki
Objects - Dead Cells Wiki
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The Concierge - Dead Cells Wiki
Lighthouse - Dead Cells Wiki
Graveyard - Dead Cells Wiki
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Version 3.4 - Official Dead Cells Wiki
Outfits - Official Dead Cells Wiki