This is a pretty amazing game, it gives me vibes of Minit with permanent upgrades and dying quickly. I liked the new idea of extending the time instead of always being fixed but It would have been awesome if it is more utilized like paths that are too long without these upgrades because when I have the 2 or more extensions, It was not that much required :)
Overall great game for the jam :) I think it is a great idea to expand on :)