*Lavas in Level 6 can be completely cleared out like this:

*WALL IS NOT WALL eliminates all the walls in level 20:

*You may also pass level 29 without even pushing the key (EDIT: is fixed):

and crash the game like this, using AND for duplication:

Maybe a WALL IS WALL sentence can be added?

@thePixelXb_ the first two things with level 6 and level 20 are intentional. But I fixed the last one by adding "wall is wall" to level 29.