I just beat the SP on the Hardest Setting and found some parts to be very VERY annoying.

Any Parts involving the PING or those heavy type Aliens are extremely annoying... i usually got by these areas with stealth or 3 C4's.

...Everybody post the most difficult or frustrating part of the Campaign and maybe we can help people beat super soldier too. 8D

Its very annoying unless you take your time and stealth stealth stealth dont shoot anything lol

yeah i know!!

i actually stealthed through alot of tough areas like the end of the Game and most of the Cell soldiers in the game.