Commando Archive

Hey, I have heard that doing these types of missions is the best way to get exp. Basically, i find these lairs and then I kill everything out, shoot the lair a bit then wait for spawn again and do this until it is at about 1/2 to 3/4 health then run away at least 300m. But, when I come back the lair is still at the same amount of health and no new creature spawns. How do i get to make the lair constantly spawn. I know that the leviasqualls only spawn at the "good" lairs, but even at those i kill like 10-15 then no more spawn. What am I doing wrong?

your not supposed to attack the lair and i think the fixed that exploit in the new patch