Info: So I felt like doing some degenerate timing. I timed some different ways of doing level 1. Just remember that from the fastest to the second fastest its just a few frames + that you might get better/worse timing on the jumps.

Verdict: Fastest strat is doing a delayed double jump and then do another double jump from the middle part into the portal.

Slowest strat is doing a single jump and then doing a double jump ledge clip into a double jump.

(All above is based on my atm performance)

All clips of the different ways done can be found in this playlist: https://www.youtube.com/playlist?list=PLeyrp0COnSGxw-cVKhGFvDbeu1nl4UaYY