Well, for a first game jam, you guys did a really great job! I honestly wouldn't have thought that.
That just might be it for the gorilla. It's actually not a bad idea for him to have a small detection area, as it makes the ability more skill-based (which is cool!). It'd just be cool if there was something to indicate when the spatial ability can be used, like the player character glows red or something right before getting hit.
But also, when I think about it, it's easy to see how the gorilla can possible OP in this game, since the boulders are the hardest things to avoid. It might've been the case in future levels, but I'd love to see other challenging obstacles. Maybe the eagle follows the player slightly instead of going in a straight line across the screen, or maybe there's spiders crawling up and down in front of a pathway.
It sounds like you've guys got an idea of what you'd like to improve about the game though, which is awesome. Keep working on it, and again, great work getting this done so quickly! ^^