Hmmm, i will check out Doom 2 on Amiga. It's too bad there aren't any good games since 1995.
It's called Adoom and you can use Doom, Doom 2, Ultimate Doom wads and also any patch wads. When I mentioned that there were no games since 1995, I was talking ECS. There are a few for AGA or graphics card/accelerated Amiga as Retro-Nerd and kriz have mentioned. (can't run them on MY Amiga, damn it!
But what Amiga are you going to run? I'm guessing you're going to try WinUAE and in that case, you can run any Amiga game - whatever the requirements.