I like the dialogue for the checkpoint explanation, and the art is really cute. Getting a huge boost from jumping off my past selves is also a nice touch that I don't see in many games that take a similar idea - That said, I think Razor's slipperyness & high top speed can make the main mechanic feel a little frustrating? This feels like a character controller for a game about moving crazy fast, but it feels a little at odds with the precise jumps & hard turns needed to jump on other dinos, and the slow buildup to top speed can get a little aggravating when I have to repeatedly restart to fix mistakes. That said, I think everything else here has been done fine. With some adjustments to the character controller (or maybe the level design?) this mechanic could feel excellent.