I cant finish level 28 I tried everything but it wont work. Level 29 & 30 I finished right away.

Should achievement work now or sometimes later? Because it is not working yet and there has been no info about it.

I've done all levels now 2 times, and still no achievement. Do I need to play through all levels at once? If that's so: please fix level 28!

Will you be able to control the dot via mouse, or is this game strictly controlled by keyboard?

Assuming you have to complete all levels including level 28 for the achieve. However i cant seem to complete 28 no matter what i do.