I really enjoyed the battles. Once the Grapple Shot was fully upgraded it's very fun to use against the enemies. I don't like the fact that I'll have to start over collecting the Armor upgrades when I start a new run through, but at least I can add skulls to the game play. 343 really needs to fix it so players can choose missions and with all the Armor upgrades that have been previously collected once the game has been completed.