Cool idea for a hack'n'slash!
I'm not sure why I should deposit time in the clock or that will help me. I'm not sure if there is any progression for the game, which I think would help. I'm not sure if it was lag or hit-stun / sleep when hitting enemies, but the quarter-second freeze was a bit too long and felt bizarre rather than juicy. The attacks otherwise look and feel good.
Also, for timers, it would help to limit the amount of decimal places that print with string formatting, so it doesn't print really long numbers that are hard to read. A font with same-width characters would help, too, so the timer doesn't bounce around when changing each second.
Cool concept, I enjoyed the game and can definitely see room for it to become a full game, for example if there were monsters that were massive and required multiple time loops to attack them, or if you could store your time to set a new spawn point as you progress. Maybe even killing your past lives would steal their time but end their timeline, if that's not implemented already. Lots of potential with this idea.