Hey Gaz, fun game. Very well done!
One thing that I think you should look at is the collision between Jack's head and the ceiling/platform. Looks like it is a few pixels off and kills him without touching the energy barriers. Gets a bit frustrating
No problem I can look at changing the graphics slightly so you can see the definitive edge to the collision 👍 😉
Cool, I think that would make it more precise, since it is a very hard game to begin with :)