This is awesome, I love these types of games, Zachtronic etc. I didn't complete it but I plan to return. I think I was getting a bit frustrated having the code board cleared each level when I'd spend a bit of time writing out some code that could've worked for both puzzles (e.g. the code to move up until you hit a wall). I think it would've been nice if you could preserve the code from earlier levels each time and instead the first few levels you're just adjusting your solution from the previous level to overcome a new challenge. Also encouraging people to write more reusable and satisfying solutions that can solve the entire game for example, rather than just the simplest one which is looping over the movement directions required.
Sorry turned into a bit of a rant but wanted to get that thought down. Overall, great entry for 3 days!