I've been hoping for a thread like this but didn't want to start one. I'm at level 48, got there pretty fast, had great fun with it at the start, am winning most games, playing with friends, and as soon as I top out level 50 am planning on moving on. I feel like I've been there and done it already.
Also I don't know whether it's incredibly forgiving but it's got to the point where I'm the one who wins a lot of the time in fights where the other person shoots first and I'm thinking that shouldn't have happened and that guy/gal hates me now and thinks it's lag or something, which maybe it is. I've also started fannying about a lot while playing and am just trying to do acrobatics and get to mad places. Ideally I'd like the mechanics put into a sandbox game - Crackdown 3 with wallrunning and double jumping, yes please.
It's in no way a bad game but even with all the modes you'll be just be going through the motions within a week.
The worst thing was a friend bought it to play with me and some others without saying he was going to buy it and I didn't want to tell him I'm pretty much done with it.