This is the build that can help you get that 1st clear with randoms in Karel's Mothership on Conquest Difficulty.
Nearly invincible, I personally have done 80 rescues in one match to secure a win with randoms that go down a lot.
Weapons Suggestion:
Thunder Cage or Storm Cage; swap this out after you've defeated Pattern-Enhanced Arche Slayer (2nd Commander) to Whirlwind to deal with Legion of Darkness enemies
ERASER for Legion of Immortality enemies
Piercing Light for Reborn Alzaroke and Karel
Explanation on Safe Recovery; this module gives more 4.5% more incoming damage modifier, with all the additional incoming damage modifier this actually increases your overall survivability by roughly 20%. If you feel you don't need the extra survivability, you can swap this around to modules that give Duration, Range, or a module such as Shot Focus.
If players decides to leave the mission, this build can solo the rest comfortably.
Keep in mind being a Super Tank will win you matches but don't expect fast runs if teammates are bad.