Fun title. I kept wishing I could at least waddle left/right on the ground when I didn’t have my pack, spent a lot of time having to throttle up to just edge to the right (and in some cases, as the game page warns, resulting in my platform falling off from the wall - which is both cool and annoying!). I didn’t quite understand how to unlock checks, I think I had to knock them over, which I did once to get one, but in other cases they got wedged into a corner and I couldn’t do much. Later realized I just need to ram into them. Also got trapped in one section because of a key platform being cut off, though in most places seems like you could sort of run into the wall to regain some energy as you go upwards. And I found I kept getting “stuck” to the walls, even as I’m say pressing right and the wall is to the left while the jet pack is moving me up, it was just get stuck to the wall (and then overheating!)
All in, definitely impressive for only 2-3 days of work!