1. The game is way too short. 8-10 hours straight through per difficulty level.
2. The skulls are about impossible to find (power jumping is a glitch and should kill you) and from what I understand require a strategy guide to attain.
3. The menu is a little confusing especially when it comes to changing the dificulty level.
4. You can modify many aspects of your armor but you can not see what the overall look of it is because you are only shown a limited and angled bust of yourself.
This is all that immediately comes to mind.
Because of the above reasons I feel H3 was rushed and recommend for those that can wait to wait until the cost comes down. The game does not demand $60 USD.