Catalyst looked incredible though, amazing art style.
I really disagree. Sure it did some annoying things, like the skill tree and some side content, but honestly, I can't see how someone who loved the first one could hate Catalyst, the gameplay is as good, as well as the story missions. It's only the side content that can drag a bit too much, though I personally really enjoyed having more freedom and spending more time in it than in the first one. I just wish leaderboards weren't full of cheats, if they were clean, I would have spend even more time on the game doing all the created races and such...