Softlocking and the Undo Button
I just want to make sure people are understanding the undo mechanic, because it is a massive QoL feature, and I keep seeing people talk about being softlocked or messing up their save.
You can undo forever. It gets much faster when you hold the button, so its not even a chore, if anything, be careful not to overshoot too much. You can undo through resets, through checkpoints, after shutting down the game and opening it again, after exiting a level and coming back.
You should be undoing all the time. Theres no reason to re-solve the first third of a level 20 times while you experiment with final two thirds.
Im sorry if this is obvious, and maybe some people are experiencing undo bugs (Ive seen it mentioned once), but I keep seeing mention of "softlocking", and damn near 100% of these problems are solved by holding a single button for a few seconds.