I think Gwen has covered a lot of my feedback.
I like the idea of “oops, I broke it — better fix it” …
I thought all the detail about the different eras was great.
There was some strange, almost contradictory text - why would the power to manipulate time be a time-travel device gone awry? That kind of seems like what you want in a time-travel device.
"Adaptive difficulty system" and "singular difficulty level" was confusing as well.