I started the game my first playthrough on hard (don't ask why I regret it immensly....) made it to the sewers to the part where there are the three needlers and then the two bigass monsters, I gave up and hadn't touched it for 9 or 10 months til the other day i restarted on normal, i really really like the game when im not getting my ass kicked.
100% Retail (All DLC included):
GUN. Dead Space. Fallout 3.
Dash of Destruction. Battlefield 1943.