Yeah, I finally beat it, and I sped through it the time I beat it taking virtually no damage. Going to go back now and beat the game on hard. Plan on basically farm farm farming and getting everything maxed as early as possible. I actually used the canon alot though. The shotgun didn't work well for my playstyle except a few situations. I guess everyone's different End game the shotgun worked better for me, next to last mission.

Although, the game got REALLY laggy......like, REALLY laggy. 1 to 2 fps top....And my computer is only a month old, gaming computer too. Don't know if it's just me, or if near the end it just has that much going on with effects. I turned everything down, too.