Wow, that’s a really good game jam entry! :D Although a little bit clunky and not too smooth on controls, after you get used to it, it gives a lot of fun. Using the grabbing arm is nice (great inverse kinematic!), but then, when you unlock a grapping arm it gets even better, gives you so much more options and freedom in movement. The feeling is comparable with new Spiderman games :D I like it that you didn’t nerf the grapping arm too much, so it has quite a great distance of working (I got to the final mountain using propeller + grapping arm, without rock shooter (but I used the rock shooter to climb on the big black cuboid)), but it is very rewarding for the player :D Oh, and of course, it would be that fun if the level design was not as good as it is ;)
The only problems I had are crashes. I got two crashes: when clicking on a lever on the black cuboid and when clicking on the launcher(?)/lever(?) behind the smaller mountain. Nonetheless, you should be proud of yourselves, great game :D