I understand that it relies a lot on shooting, but it's still a platformer at heart isn't it?
Anyway, I'll pick the game up tomorrow. My new DS3 is about to get some love. 
It has jumpy tasks and collecting doodads... but there's no really intense platforming. The only game in the series (I have them all) that comes close to that is Ratchet 1, but even the platforming in that one is pretty tame.
Maybe you'll have a different opinion, I don't know. It's a great game though, second best in the series (or third best, haven't played 3 in a while), it'll be a special treat if you haven't played any of those because it's so similar, shorter, and axes features. I was still very satisfied.
What did you pay for the DS3?