@prukogui from what I can tell, SWA on lr-2015 has permanent, broken controls. lr-2016 can be properly configured, but will run slower. lr-mame will run even slower, requires a different ROMset, but has more accurate emulation.

2016 seems to run "okay-ish" up until the trench on the second scene, then there are a bunch of graphic anomalies.

Wish I had better news, but there aren't many good solutions for SWA -- at least none that I could find.

@dan1300
Killer Instinct (arcade) was ported to Killer Instinct (SNES)
Killer Instinct 2 (arcade) was ported to Killer Instinct Gold (N64)

I see many people refer to the N64 version but if you want the original KI game the SNES version should work well on the Pi.