I made a new enemy that is supposed to replace the Commander Keen enemy, but the doors I tagged do not activate the special Tag 666 line when I kill it. I'm not really sure what I am doing wrong. I thought if I added A_KeenDie to the enemy's death sequence, it should trigger whatever is tagged with the special Tag 666 line.
EDIT: OK, I just tested the custom enemy in MAP32 and that seemed to have worked there... Maybe it's the custom map I am making that doesn't have the doors properly tagged, or maybe the MAPINFO is messed up...