I'm so happy Valve pushed the Steam deck the way they did. Didn't expect many games, let alone, Helldivers 2 to run on Linux but it runs first try. No tinkering, nothing.
Yeah it doesn't run great and I won't be doing it often (I don't like playing shooters with controllers anyway) but worked well enough for this particular use-case.
The desktop was Linux also 😃
E: to be clear, it ran very smooth at ~55FPS, with no frame drops, but with lots of jaggies. Icons are illegible even on my 75" TV.
I've been playing it by streaming from my home PC using moonlight. runs well and the battery lasts a long time.
still have the issue of trying to play helldivers with controller, but it's better. and theoretically since it's not doing the rendering you can hook up an external monitor plus m+k and it'll still run well