Good game. I don't know if I managed to collect every comic and stomp every knight in the level, but I think I scanned almost the whole map. I like you take on the limitation and how the player character is unstoppable. I wish if I could use that epic gun installed on my arm though and turn foes intro ashes =D.
The level felt way too big for how much stuff it has. Most of the I was cruising around in the void looking for some action. I think some kind of a minimap or an indicator to where stuff are located would have been very cool. Or maybe it would be better to reduce the map to a small space while zoomed out where you can see everything and add like 2 or 3 more similar small levels that you transition into after beating the previous one. Also as another guy already said, adding more effects, particles and sounds would make stomping stuff more fun and satisfying.
The game is alright overall and some more polish it would turn into something epic. Nice work!