Get all achievements is bugged!!!!!!!

Death- and switch-associated achievements are blocked, stay in air is glitched a little, some of achievement score metters are showing wrong numbers and doesn't work too Please, fix this or tell me what to do to fix it by myself Thank you!

There are a Total of 85 Achievements for this Game. I finally was able to get all the 84 achievements knowing the Last Achievement remaining is get all achievements. Now even after completing Level 100 without dying and getting all 84 achievements, I haven't got the 85th. Can anyone help me with that?...

I got all achievemnts except the one "Get all achievements" Anybody else having this or does it take some time to unlock?

Piease, fix or delete this achivement!