Controls feel rough. Squares was an interesting choice and i liked how they didn't move exactly, but they got stuck on walls a lot. It was hard to see the instructions at the start of the game also. Not a bad game and i enjoy the concept.
All of the issues that you have mentioned are things that I would like to work if/when I take this game further after the game jam and in any other games that I make so thank you for pointing some of them out.
