

Worked perfectly! Fantastic experience.

Its runs great given the extreamly limited hardware of the system 20-45 FPS on average that might not be much but I'm impressed its running.
I had to exit back to the main menu and change the resolution from there
it does run a lot better with cachy's custom proton

Plug N Play
Really nice vibe pick it up

Played almost the entire of my playthrough on my Steam Deck without any issue, outside for the framerate being a bit finicky, since in some rooms the framerate drops from 60 to 40-50, but this is due to the graphical settings being set to the highest quality.

Steam input works fine, but won't detect my DualSense input natively
Works just fine wihtout tinkering, just DualSense input doesn't work

during random rooms the game will lock itself to 40fps. sttings and proton version does not change this

if alt tabbed out of the game and hit a key on the controller it would default to xbox control scheme
Game works well and even supports adaptive triggers for the ps5 controller.

Sometimes when using the steam overlay if any input is detected on a ps5 controller it will stop being registered as a ps5 controller and start being seen as a default xbox controller.
Game works fine. Correct resolution needs to be entered on first launch after that no issues.

Noticiable performance drop on Nvidia Hardwares?
In Windows, I managed to run at rock solid 1440p 144fps, but in Linux, I experienced several performance drop goes down to 70-100 fps.
Since only used 40-50% of GPU utilization, Maybe the game or Proton is poorly utilized in this specific game.
While my setup had no issues, PCs with weaker Nvidia GPU (GTX 750Ti, 1030, 1630) might struggle to run this game.

Works pretty much perfectly
While game is minimized, it'll still take mouse input. Maybe keyboard too.

Works almost as intended, slight issue with mouse / display resolution when tabbing in and out?
It works normally if you don't tab out or anything, but if you do tab out and then back in, sometimes the resolution is slightly wrong..? mouse won't work right? It can be fixed by changing resolution ingame to something else and then changing it back, but it's a little annoying.
see previous mouse / fullscreen / tabbing out issue
Great game, fun and is Platinum Performance

Works perfectly out of the box
No tinkering needed!

works as it would on windows. maintains a locked 144fps.
you may experience an issue with the mouse not behaving properly in certain sections that i won't spoil. this is most likely an issue with xwayland. in that case just try to relaunch the game, and if that doesn't work consider using gamescope. this is the only issue i've ran into thus far.

Works OOTB
Singleplayer: ✓

Completely flawless and an amazing game
Absolutely no problems. The artifacts some people have mentioned appearing over enemies, in cutscenes, etc. are intentional. They're part of the game's aesthetics.

mangohud %command%
Nothing to add other than I love this game. Great music, great gameplay and brings me back to my days as a kid playing Dino Crisis and RE 1 on the PS1. No issues at all playing with proton. Also using a dualsense controller to play and it works flawlessly. Play this game, you won't regret it!

Turn off reflections. Huge FPS boost in certain rooms. Game capped to 60Hz for battery saving, stability and quiet fan. Completely stable 60 FPS at otherwise essentially base settings (1280x800 resolution, Film Grain turned off due to personal preference).
Capped to 60Hz.

Disable Reflections and Volumetrics for stable 60 fps and average 9-10w usage

No issues here, works great, even with xbox one controller, used GE's proton but probbably should run on steam's default as well.

Turning off relections in the game settings is no longer a conern, however it is still recommended for mostly stable 60 FPS, otherwise keep it on and change to 50Hz from the battery perfomance settings (it will run between 30 - 50 FPS).
Change Frame Limit to 50 Hz
Noticable moving artifacts on the dead enemies (seems normal on Windows for me)
Occasional FPS drops in reflection-heavy areas
Disabling reflections will have a massive impact on the graphics, but otherwise it is great out of the box with only one tinkering

For 95+% of the game, the player won't find any issue.
Controller kept rumbling permanently and game eventually froze
1 crash around the 15 hour mark. Retried with reflections disabled.
I tried to see how far I could get without disabling reflections, as others have reported. I got nearly to the end, but unfortunately I got one crash and that is a no-no. However, crashes seem to be so rare in this game that I don't think it's a factor.

crash with proton experimental

Screen Refresh set to 50 Hz as game cannot maintain 60 FPS
Drops to 33-35 FPS in wide areas with reflective surfaces.
Frame drops in certain areas, the game is perfectly playable from start to end and the pixel style suits the deck very well.

Game runs really well, turning off reflections keeps a stable 60 but does have an impact on graphics.

I played the game from the Humble Games Collection.
Getting the Humble launcher working from Steam is a bit tricky. I looked at NonSteamLaunchers-On-Steam-Deck to get it working.
Once the Humble launcher works, the game can be installed and played without issues.

TDP 9W
The game might freeze if your system's uptime is too long (if you haven't restarted your deck in a while and instead use Sleep). To fix simply Restart the Deck.
in addition to what is said in the other reports, its a flawless experience unless you almost exclusively use Sleep and never shut your deck down.

Runs out of the box
Had absolutely no issues playing the game from beginning to end. Used a Dualsense for controller but also played a bit with mouse keyboard.

Also played on my pc, perfectly playable on both systems
Worked flawlessly, only issue are the achievements unlocking once you exit the game, prompting possibly multiple unlocked achievements in the same session, having the exact time unlocked at once
gamescope -w 1920 -h 1080 -W 1920 -H 1080 -f -- %command%
Attempting to Alt-Tab yields a black, unresponsive screen. Launching through Gamescope fixes this