Have the game. I might wait to play it until later...
Played through Entrance, pulled the head off Charon, and completed the First Circle of Hell, Limbo (very a propos the XBLA release coming very soon...). Still eight Deadly Sins to go. Nabaz was spectating, and we both delight in the brutal cruelty of this game. So far, the gameplay is almost identical to God of War, bordering on plagiarism.
Today I got through the Circles: Gluttony, Greed, Anger, and have reached level 7/10, Heresy.
completed the game on normal difficulty.
Nabaz was spectating the last fights: the last few challenges were hard, but not unfair, and Lucifer (yes Lucifer) was not bad at all. Actually, I defeated his first form using nothing but Holy Barrage (tap B), and defeated his second form using nothing but Diabolic Hammer (Hold RT and tap Y). Not very challenging.
To get some sweet gamerscore, I continued playing with my upgraded Dante, and got a few more achievements for reaching max level in Holy and Unholy, and for maxing out the Holy path, a total of 110G.