I made my own gamemode with spawners like this:
[entity_random_spawner]
everywhere monster_human_grunt 15 7
everywhere monster_human_grunt_shotgun 8 7
everywhere monster_human_grunt_grenade_launcher 15 7
everywhere monster_barney 5 7
everywhere monster_human_assassin 2 7
everywhere monster_sentry 1 3
but after some time the npc go invisible at random
ps. I play this on death match maps
Slambert-Anders
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