Good attempt at capturing the retro feel with the CRT filter and 8-bit bgm. Good humor on the endings too.
About gameplay, realistically I felt the current setting (map size + rock amount + movement speed) doesn't contian enough stimulations to retain player interest after about 5 minutes. Either that or it's my attention span these days are deteriorating into zoomer levels. Enjoyment levels fall quickly when the player starts to feel stuck on the final 1~2 keys.
Would suggest more meaningful finds in rocks. Can be power ups, or more notes to read, or radar that detects keyitems when close by, or simply a mini-map showing remaining rocks, anything to tell the player that breaking the wrong rock is still meaningful gameplay.
Also the speed difference between run and 4-leg sprint can be more apart to show the difference more clearly. A toggle press instead of hold would also be an user-friendly improvement.