We have been testing Reflex Unit : Strike Ops regularly on Steam Deck since the beginning of development, and believe the game is 100% compatible, and plays fantastic on the device!
For anyone playing on Steamdeck, we recommend to set the following in game
Settings > Video
- Frame Rate : Uncapped FPS
- Anti Aliasing : Balanced
- FOV and UI Size : As you prefer
Then in Steam Performance Overlay, set Frame Limit 60 FPS (60hz).