Pixel perfect Collision?

I'm working on a minimalistic game and I want to implement a Pixel Perfect collision like show this video (min. 1:20) https://www.youtube.com/watch?v=9X6GMhItZJE That will be the central mechanism of the game. I was tried using the ofset, setuping the Physics and coding a PlayerController but don't get what I'm looking for. Is there a way to get the Pixel Perfect like in the video?