First of all, this game is hard. Like, very hard.
But being hard is not the problem here, because there is an easier mode. The problem is this game is boring. The story is boring, the gameplay is boring, new weapons and equipment are boring.

If you really like the style or the art, there are other games better than this one.

EDIT: The easier mode it's a shame. It is not easier, it's for dummies.