You're right about the difficulty capping out I believe it stops at around 20 or 30 can't remember the numbers right now I was planning on extending the play time but ran out of time lol xD
As for the space bar I had experimented with making it so you couldn't move when it was held but ran into some responsiveness problems that would take some time to fix so I scrapped it, had other ideas but again ran out of time sadly I only had time during the weekend to participate.
Thanks for the comments and for playing it for so long lol.