Yes, this is definitely not Karlson.
I think the idea is pretty cool, but it's kinda weird that you can wait at the clock the first time so it's easier to beat your time. I think it might be interesting to have the player run through all the levels first and then told to beat their times. Beyond that, the gameplay is pretty fun. The grapple gun is cool, the shotgun is fun to use (even though it only seems to work when pointed at the ground), and the slope momentum bug feature is really fun. Overall, a pretty cool game!