Overall experience: Intrusion 2 is an easy recommendation as it runs perfectly native without any tinkering required.

A quick note on audio: Contrary to the only Steam Deck report currently available, I experienced no issues with audio whatsoever. For reference I'm running Pipewire with the pipewire-pulse pacakge installed which might contribute to compatibiity. If you're worried about audio on your system save yourself the hassle and just try the demo on the steam store before buying.

Minor bugs:

• The windowed and fullscreen setting seems to be inverted in the options menu, functionality is flawless otherwise.
• The only resolution options available are "Default" and "0x0". This bug was not present in the demo. "Default" works perfectly though and appears to be native resolution.