Neat idea for the game but the controls are really strange and not very pleasant to play with, the cursor is very weird, it has to be in a very specific spot to trigger the button you want to trigger, the buttons to add/remove code are really small in comparison to the cursor but also it seems the remove button is very sensitive, I was trying to rename a method and then bam, method deleted, and then I tried to add a new one to replace the deleted one and it deleted that other one.
Camera movement is very dizzy, considering that I have to hold right click to move the cursor, the moment I let go camera goes flying towards new direction, I'd suggest doing something similar to what FNAF 1 does, getting rid of the right click to move the cursor around and just make it automatically be where the mouse cursor is, make the camera only move in the X axis, and instead of having that enter/exit screen move be clicking on the respective screen you want to interact with or keep the enter/exit screen button that can work too. That, I think, would still allow players to be able to see the methods running while running the game, which that is a neat feature btw, but less strange and not as dizzy.