The descent robots are just reskinned ghosts from the secret pacman level, so no you can’t kill them.
The best way to beat this level is just to sprint – if you can remember E1L1 well enough, and can mentally mirror it at the same time!
I removed all the pickups such as health from this level so that it wouldn’t spoil the upside-down effect. I may go back and pare down the number of ghosts in a future version.
That said, I encourage anyone who wants to to cheat. It’s meant to be a fun romp down DGC memory lane, not necessarily a challenge or anything.