ohh yeah that makes sense, you’re right! the only trouble i can think of is that it can be slightly cheese-able by killing everything first, leaving one enemy alive then waiting the countdown before finishing them off if you set it too high, but if that happens it also communicates to the player that they could’ve just done a shorter time instead, so everything checks out!
again, amazing job on this one, i hope i wasn’t too harsh, just hoped to be helpful!