Damn this one is good!
1) the concept is simple, but fits the theme well, its time based and platform puzzle based in the best way possible
2) the risk reward mechanic is there, tougher chests require tougher jumps, but there is a looming danger that fits on theme. Better chests are different colors, nice visual indicator
3) incentive to replay to keep raising your score
4) even a fun little cinematic at the beginning
5) the humor lands
6) What I would like to see. Music that grows from calmer to more excited as the game goes on and have the art pop a bit more
Great work!