If you change your filters to (going off the top of my head here)
Famous
All Time
All
Local
That should add it to your map on the east side of the southeast of the four main islands. I haven't checked in a while though, so it may have been bumped off the list. It's called "Easy Level for the Trophy ;)" if there's a way to search.
Could never find it. Wish I could search by title or something, but no dice as of yet. I don't think there's a way to send levels to friends over PSN either, but I may be wrong.
Anyway, the game is definitely a blast. I just unlocked/"powered up" the 2nd area you can get to. I've been doing side missions fairly regularly as well as hunting for shards and dead drops. It's also hard to not just screw around at times. I like hurling cars across the map, or try and see what the physics engine will do under certain circumstances.
While I was pushing cars around I happened to jump on one right when it was blowing up. It jettisoned me WAY higher than would ever be possible, and it had to have been some weird physics glitch as I didn't feel any damage from the blast either. I went so far that I was beginning to think the game broke and that I wasn't going to stop flying

But I reached the peak of my jump right as the city faded from view and Cole's animation did some odd things... then I thunderdropped my way down. I got the trophy for "thunderdrop from the highest point in the city"
I do feel that the power switching it a little cumbersome though, and a bit unnecessary. In the first one you unlocked the power where if you get a headshot the enemy explodes... and then from then on this happens whenever you get a headshot. Or if you wanted to do a long shot you just held up on the d-pad(IIRC) and it zooms in. Now you have to equip the specific headshot or longshot bolt to get that to happen. I kind of wish things were better streamlined like the first game and not an either/or type thing. Or at least make it a little smoother than pausing the game and cycling modes to get what you want. That's really my only complaint.