Hi Niilo!
Yeah sliding/dashing were two methods of movement that I was on the fence about including. I put time in to reducing the hitbox of your player during crouches/slides so I decided to leave it in there, perhaps as an error. In case this was your issue - you have to be running to slide, otherwise you will just duck quickly!
I apologize, if I wasn't going to fully integrate the move I should not have left it in. Glad you still enjoyed playing though!
Best,
Brandon from TheIndieDream