Great Gameplay, fascinating imaginative storyline. Combat system is unique and fun to use.
As for difficulty, it's not too complicated of a game. There's difficulty settings, so if you're not too comfortable with shooters, you can select the easy difficulty. There's also a lot to do, you can wander around, achievements are fun to get, and you can upgrade you character by getting ADAM off little sisters, which is rly fun. You can also pick between using plasmids and firearms thru the game. You can hack objects, like turrets, to help you fight splicers, and the environments are fun to explore. If you buy this game, you'll not regret it!