Mechwarrior 2. It only required a 486 to run on the pc, so on a decent spec classic Amiga it ought to run very well.
I have always wanted a 3D Mech game on the Amiga, and the closest I've got is running the original Mechwarrior game by Dynamix (the guys who did Arctic Fox, A10 Tank Killer etc) using PC Task 4. This actually works very well, but the 1989 3D leaves a little to be desired.
Oh well, I can dream....
