Im going to say that this has to be one of the most repetative and enoyingly stressful games iv'e ever played. I was really dissapointed when playing to find that when shooting at the enemy they just stood there and let you shoot them. The guns are ok, though could have be alot better.
Why this is so repetative, is if you get quite far through the level and die by getting shot you'll start back at the checkpoint which may be far from where you died have to start it all again, and it is more enoying when on insane difficulty, as it takes less shots to be killed, though the enemy stay the same as it will still take far more shots to kill them.
The only good things about this game is you can get trophies, which is the only reason why i play to get them, cant think of anything else, i would only get this game if it was £10 or under.