So many hours of frustration, but lots of satisfaction once you finish it. Only reason I went through it was to relive the memories of TM2 from back in the day. Also, the developers of this game are sadistic. Absolutely fucking sadistic.
I think the worst part of it is the near-insta (.5-2 sec charge? wtf?) kill sniper rifles that the AI has. I wonder if it's a bug that QA missed, or just another random ass variable they decided to throw in just to make you restart when you've almost got the gold medal.