So, this game actually works on the Asus Ally. Use the Asus launcher to load the game with the keyboard to controller option. The reference card PDF is actually in the install folder to learn the keys that needs to be mapped. One of the only if only heli games that is still supported on Win 11, and actually works.
Let me say this, I can't afford a Steamdeck right now, but I have a perfectly good 7" tablet that is pretty powerful and rather then trying to force Warhammer Battle Sector onto the Android device and it chugs along, I got this to have Warhammer tabletop skirmishes on the go. If you like the 40k tabletop, this is the next best thing. Even better because this game doesn't require a ton of space or resources so I can play this on the Android on the go using Winlator. If you miss playing in person, dislike rules lawyers, power players or people with poor hygiene, this is the next best thing.