Finished the game and wasn't awarded my achievements :|
P.S: I understand that the api has flawed and the developer was no longer in possession of the files since ~2016.
When the avatar falls it travels an inconsistent distance, this is most apparently on level 8 if you simply walk forward.
The frequent use of 4-2 pixel timing windows, necessary for progression pairs poorly with; the execution delay, the common failure to read jump inputs,
the visual jump-animation's sync with its frames, when it block inputs, |And the entities on screen that due to their rendering (and the constant wall checking) both slightly increase delay & the chance for input failure, and are hard to avoid due to their speed.
The design of needing to jump again just before the animation reaches the ground and factoring in the varying delay, should have been polished a little bit more in testing, since it is the key enabling (not the unique/defining) mechanic.
Acheiving the flawless medal is only possible on pc :/ ☆4.5/10