This is incredible design with such few elements. Also it feels like it was designed to be played on a controller, so it may be a good idea to mention that a controller is recomended (either in the game itself or right below it on the page).
There's only two things I'm missing while playing this:
1 Some audible feedback on everything that happens on screen, pellets, steps, the door opening, etc.
and 2 Some visual element to tell what your invulneravility window is while rolling (though this is just a massive nitpick), like a cloud of dust that stays visible for as long as you're untouchable.
Overall one of the best games from this year's GGJ I've played so far.