A much improved sequel. They improved on the things that worked in SA1 while throwing out the things that didn't. I don't hate the radar change like most people seem to, and the mech stages can be pretty fun. The only real sore spots for me are the boss fights. Most can be beaten in 20 seconds and are inoffensive, but sadly the final two fights are the worst in the game. Both are definitely elevated by the music though. The music in SA2 is SUCH a step up its absurd.