

It just works. any proton version should do the trick. I just use the latest GE-Proton typically

SteamDeck=0 %command%
Use the Launch Option to enable graphics options and disable 40fps lock
Runs perfectly, basically locked 40 FPS the whole time except for large explosions which cause slight frame drops (SD LCD)

Superb game. A much better goat sim type game. Ran perfect other than small tutorial text that was not legible due to the size(L1)
the tutorial text
runs great on deck no tweaking

framerate is locked to 40, so its worth adjusting the screen refresh rate to either 40 or 80
Runs perfect out of the box!

Audio messed up after resuming from sleep.
Drops below target framerate during explosions.
Not particular to the Deck, the game is just buggy, with minor collision issues and had to restart the final boss because they just... disappeared.
Capped to 40fps on Deck by default, and the developer has removed the graphics options from the menu, probably some way to get it back. So I just capped to 80hz for half sync. From going back and forth on the desktop, the game then set my PC to the Deck settings which seem to be mostly High/Medium with Lumen and Fur Strands disabled. So it performs pretty well considering.