>>723240357
ProjectD2, it has built on controller support. It's a little janky, but feels very playable.
There is a step by step guide to get it installed on deck. The easiest way is to install d2 on windows, then run the mod install on that folder, then move that d2 folder onto the deck.
Then you have to do some weird stuff with proton and some stuff with .net runtimes, then you just launch it through steam. I've crashed twice so far on the way to hell but it's pretty stable. The controller got a little weird befire crashing, so I know what to expect now.