

Worked perfectly out of the box

Just get it :D

Lower graphic setting ingame and lock at 60hz on performance tab
Works perfect out of the box. Only 2 graphic presets. Default graphic setting achieves 60fps. If you switch to lower graphic setting, you will confortably play it at 90fps, without much fidelity loss.

TDP limit 8 watts
Text slightly small

Works perfectly
Works perfectly

Game works out of the box with the minor inconvenience of the game window turning black when focusing on a another window.
Game window turns black when focusing on a different window.

Tweaked TDP to 13 watts and GPU clock to 1300 to save a tiny bit of battery. No performace impact
No issues to report!

Some text is a bit small (ammo counters and pickups specifically)
Changed resolution from 1920x1080 to 1280x800, highest quality preset, no other changes. Stable 55-60fps on Steam Deck OLED
Works out of the box

Works out of the box.
Input got "sticky", i.e. sometimes, especially when holding multiple movement buttons at the same time, the character kept moving in a direction even when the input was released. Pressing movement buttons sometimes canceled-out this effect.
Try running xset r rate 250 30
and switching to borderless window instead of fullscreen to solve issues with input

just install the game and have fun!

I played the whole first chapter on single-player, using 'Experimental' as it's my default, but the game seems to run on 9.0-4 as well.