This is a nice start to the classic launch-jump platformer. I like how you used arrows and warning signs to help navigate the level.

I think we could be zoomed out a bit more, or utilize more of a wide screen to give us more of a warning what’s coming up in the level. Also, some edge-of-screen indicator to tell us the net is getting close (and where it’s coming from) would help. There were several times I unexpectedly crashed into it, and losing when you had no idea it would happen is a bit unfun.

The jump feels great, though, so kudos on getting that core thing right. I also think there’s some interesting level design going on with alternate routes taking advantage of the ability to double-jump. And turning the drag line red when we can’t jump anymore is a great idea.

A bit more polish, some playtesting, and some music and sound effects, this could be super fun.