Just finished the game on 360, pretty good overall, I like how it fits in nicely just before G1
It froze once while driving on the roads of Iacon and glitched during the fight where you have to protect Ratchet, the game simply stopped sending waves of enemies and had to restart from the last save game.
The hardest/annoying fight was with Trippy, I just hate always having to run around in circles and waiting for the Boss to spread'em.
My only complaint is the dumb AI partners (at times) not helping, but its no biggy.
I hope it sells well enough for a sequel and more toys