Wow... I was thinking also of doing spike jumps in 1100 but it was kinda tricky so I wasn't able to make sure if it was possible. I also wasn't able to do 2300 without a jump because I couldn't really do the trick you did so I also couldn't make sure it was possible. For 1800 I didn't think of that. I was thinking from the cloud up to the balloon by spike jump. Didn't think of that way. 2600, I did not watch any gemskips of the original I didn't know that strat. But anyways that's really cool to see that you can still do the whole game with one jump without doing grace jumps after a dash.