Which levels do you mean?

Warehouse level 1 has to be cleared for a brief time so the red guard can retrieve stuff.

Kevin's power supply level 2 just needs the maintenance bots reset, so they stop resetting his power supply.


To make bots no longer respawn, the level in levels.dat needs "environmental flags" ORed with 2. This is the NO_RESPAWN constant. Grep says that the level editor knows it, so it should be easy enough to do.