I definitely suck at the Prime games. I'm not a fan of first-person shooting at all; I never would have bought Prime or Echoes if they hadn't been Metroid games. To this day, I haven't been able to beat the final boss of Prime on Hard Mode, and I still haven't completed Echoes on any mode--from lack of interest, though, rather than being stuck on something. I still think they're generally fun games, though, and they certainly do justice to the franchise in terms of music, cinematics, and atmosphere.