I've got to this mission, done one turn, thoght I'd camp to try to get a few dropped Silthion energy sacs, but no NPCs have appeared ??

Do I need a certain scanning level, or are they realy REALLY rare, or am I missing something...... again !!

cheers

Sorry camp?
Anyway yup they're rare, and the queen has 50 cloak.

Don't complete the mission, so you always have the option of the NPC appearing.

or in this case, not appearing ......

First Controlling the Silthion is a repeatable mission meaning you can do it as many times as you want so you can't finish it. Yes the queen and the hive are rare and you just have to churn through many NPCs to find them.

Just go through hordes of npcs and they'll show up. I've had 2 hives and 4-5 queens show up in 1k kills.