A faucet assembly contains nearly no screws.
Some may have a single hex screw holding it's handle in place. If the faucet has two knobs each knob may be held in place with a Phillips head screw.
But a flat head screw? Maybe to pry a cover off something, but for that you could just use a butter knife. Flat head screws are more commonly used on electrical faceplates and barely anywhere else.
The heroic launcher is the way to go here. It installs the games in desktop mode and automatically adds them to steam. Compatibility is, for me, the same as if I had installed through steam.
Edit: assumed I was on a steam deck post. On desktop I also use heroic, again, compatibility is great. There's a checkbox to add to steam automatically if you want.