Hi, thanks for the feedback.
1: Ok, noted. Would a zip file be a better option then? EDIT: Now available as a .zip file as well.
2: The jump threshold is a bit tight, I'll try and make that a bit better. EDIT: Updated the jump threshold.
3: It is a bit of a mixture.
4: The level select is hidden. You can access it by going to the options screen and wall jumping up through the top. Sort of a bonus for people to find. (Maybe just annoying lol). I'll say how to access it on the game description.
5: The hints should be displayed at the beginning of each level. They were during testing. If they are not you can try turning them Off and On again in the options page.(You have found the first bug I think). EDIT: This should now be fixed.
Useful to have comments, thank you very much. Happy jumping. :D