Pros:

MINECRAFT!!
They look really nice.
So far they play well.
Didn't think you'd use the pigmen, but I'm glad you did.

Cons:

This is completely opinion based, but I think some of the selections for enemies seems a bit off. I think the slime and spider should be switched, and that the Iron Golem should be the tank, but thats all of course, opinion based.

Conclusion:

Epic, oh so epic.