I haven't had any problems with Hard so far, I don't think I've even died yet (at the start of chapter 5). The game is super easy.
Anyway, it's a decent game. The core mechanics are very good - Mikami's influence is obvious. It's like a faster version of RE4 with the evasive roll from Vanquish. The problem is, the level design gets really repetitive because your objectives are basically the same throughout the entire game (find a key, run through darkness and shoot switches, find more keys, run through more darkness, find more keys, etc). They do try to break it up with mini-games, but most of those are exceptionally awful. The first one with the chandelier is okay, but after there's one of the worst turret sections I've seen in years, and three awful horizontal shooter sections. The patterns for the boss fights are okay, but again they're really repetitive and easy to dodge, so it just becomes a slog to burn down their health.
The story is meh. The only two interesting characters in the game are Garcia and Johnson.
I like the game, but it's not that great. I'd probably give it a 7 or 7.5.