Amazing
The game is awesome, and I didn't see many flaws.
To the other people: Of course it is going to lag if you let all the monsters gather up in one room.
Even on a N64/GC/Wii game... It will lag if you let a bunch of monsters gather up.
On this game, I never did bad enough to get it to lag, so I wouldn't know.
I did notice one thing that you might fix... When I paused with an enemy attacking me, that enemy kept hitting me but it didn't take any damage.