It's a solid prototype - all the base mechanics work fine and the level design seems good (though that single very precise jump on the very right of the first room caused some trouble for me).
Viewing post in Shuttle Jacker jam comments
I just went back & checked out what jump you were referring to. I actually never realized how tight that jump was when I tested it, but yeah, there's less than 1 tile of leeway. I definitely didn't want to make any jumps that hard in the early game, so I'll throw in another tile there to make it easier. Thanks for the feedback!