if it was made in 3 days, imagine what u can do in a few month? add more objects, different objectives, simple enemies, some story, and it can be a small but solid indie game on steam (with more easy lvls ofcourse). I can help with gamedesign and story if u wish.
Some ideas:
- instead of simple pistol, to make a unique gun - GUM GUN. Just change rope color and add suitable sfx so game will be more recognizable among other grappling games :)
- new mech: add simple enemies or breakable glass\walls + shoot gum bullets on RMB ("Cyber Hook" inspired). So gameplay be a bit more diverse, not just one mech for a whole game.
(Maybe those bullets could even make a gummy bounce bubble-pads on collision with terrain\lava, so it gives a opportunity for puzzles.)