i play handheld. I didnt have to do anything special, it just works. it technically isn’t verified but I just launch the game and that’s it.

if that doesn’t work for you, just change to the latest GE Proton and you should be good to go.

Chivalry II works great on Steam Deck and I exclusively play it on there now to save space on my PS5. Big learning curve if you’ve never played Chivalry 1 or Mordhau but it’s addictingly brutal and fun