Here's a doc condensing everything I know of the Death Code and Zombie Hover, since they are used in speedruns quite often but did not really have anything to centralise all the information about them out there. In hopes this helps someone sometime somewhere I guess. https://docs.google.com/document/d/15vIxU4Tf5KAGe5T2qeY2_eLLID6m7QkLM-895V9y-v0/edit?usp=sharing