wait, without an engine? i wouldn't even know how to start...
that IS impressive.
did you make the descision not to reset the timer when you die? cause boy-oh-boy was this testing my patience. also: dying from spikes that point away from you because of a certain hitbox size did feel unfair. apart from that very competent game and the sky looks super good (as does the rest, but the sky especially, yo know?).