Please post all your bug reports here with screenshots, your PC specs and a crash report if you get one.

I know this may sound like something stupid, but I am genuinely having trouble with this. In the first level, there is a section where you need to slide to get through a tight passage to progress the game, but no matter how many buttons I hit (I play with my computer's keyboard), I can't get my character to slide. (I use the D key to go right and the A key to go left BTW) What do I need to do to slide? Do I need to configure my settings a certain way? Or do I need a combo of keyboard inputs? Or is there so...

As a German i can only guess what you were trying to achieve when you picked that name. If you thought that it somehow sounds cool: no, not in german. it actually makes no sense whatsoever. It is the equivalent to Western people getting Chinese Tattoos only to find out that what they thought meant 'Honesty' in fact means 'chicken with noodles'....

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I beated the Purple Ball boss without taking damage and the achievement didn't unlock. Someone happened the same?