Thank you for trying the game. The AI basically slides across the wall if it can't go through, if it goes right into a wall, it moves down, if it goes left into a wall it moves up, if it goes down into a wall, it moves right and if it goes up into a wall it moves left. I could have made this clearer in the tutorial level/s but didn't realize at the time that the mechanic might be hard to understand for some people. 

I ran out of time to add a polished undo button (I did make one but it was really buggy, so left it out), I will add undo in a post-jam update.