I took a break and relaxed.
What's there is well executed, I can't say I'm utterly fan of the gameplay loop yet as it would get repetitive you've basically paid your debt already so it's fine.
If not enemies I think the game would benefit from some second pressure than only stamina. I think this game in particular would also benefit from keeping advancing when you maintain the up key pressed since you might spend some time getting back through a long straight line but that's really no big deal.
Thanks for sharing!