Interesting point. You can always refresh and be back at your last save point (before falling down), but I'll make sure to make the ending more obvious in the full version, thanks for suggesting that.
I see. replayed from the savepoint and got the final upgrade and buttns, even though I have zero clue what the last 2 upgrades even did. sicne I still am at quadruple jump and wall jump, so maybe it was just jump height
Ye some of them are just jump height and movement speed so not really noticeable. I'll definitely have the upgrades more spread out in the full version so you "enjoy" them more, and as someone else suggested, have clearer signs on what each powerup does.