Wow, dude, nice job! Just a few things:

1. Level 24's skip can be done faster if you use multiply to get 10¤10=100 and jump over the whole map rather than climbing up slowly.
2. How much time does the level 18 skip save? Idk how much it really skips so it could actually end up wasting time if you're not saving enough.
3. I don't really see the point in the level 19 backup strat due to how close the portal is. It just seems faster to hit escape and return to portal.
4. Dang, that level 17 skip. I hadn't even thought of that, nice job!
5. Tyvvm for the level 13 skip. It's one of my least favorite levels to do so I've been looking for a skip for a few days now. Didn't even think to go back to the portal!
6. For level 25, you can just use multiply to get 10¤10=100 again to jump way higher and get to the end in less personal cubes.