Essentially I get to level 19 and to the final missions after fending off the invasion. At this point I don't have a high enough level to fabricate anything else am unable to really make any progress because I constantly am defeated by the big queen each time I try.
The "MISSION 4 - HIVE MATRIARCH" is an infinite loop kind of side mission. The only thing you can do is change Sectors and do the Main Mission instead ( Sector 2 » Engagement Zone ).
I'll make it clear that it's a Side Mission in the next update.
