

Game just wont start
AMD_VULKAN_ICD=RADV gamemoderun %command%
New to linux. Tried multiple proton versions. Tried various launch commands. Even tried running through wine on Lutris.
Controller support not enabled by default, needed to restart the game after enabling. Apart from that works great on both Steam Deck and PC.
Proton GloriousEggroll
Version: 6.14 Release: Proton-6.14-GE-2
Verdict
The game runs out of the box with Proton-6.14-GE-2 - [Played around ~100h Total]
Notes
I was able to run it also with proton 6.3. I did not try with other versions but my assumption is that it should work with most latest proton versions.

Game runs perfectly fine with the proton GE version. Multiplayer ist fine, too. Sped several hours boltn with the heavy bolter.
Proton-6.13-GE-1
Ebable AMD FSR for even more FPS: WINE_FULLSCREEN_FSR=1 WINE_FULLSCREEN_FSR_STRENGTH=3 %command%
Multiplayer seems to crash.
Co-op game crashes as soon as another player joins the server.
Must use Proton 5.0-9. I tried Proton 5-11GE but it just locks up on the start up menu.
Impossible de lancer le jeu. Crash lors du chargement initial puis fermeture de ma session utilisateur.
Only when alt tabbing, artefacts did however persist until next level load
This does not work well with Remote Play (streaming to another computer) Atleast not with an intel card, tested both Arch and ubuntu clients, however this game only streamed sound and a still picture, all other games work fine streaming.
Absolutely perfect. Stellar performance, no crashes, everything just works.
Game is fun as hell. Highly recommended.

Runs perfect with latest version of Proton as of this writing. Borked with 3.x versions (stuck on intro movies/black menu). Played for a little over 4 hours.