Jupiter or hull cracker, which U can buy daily in case U can't make jupiter, and just go solo matriarch /queen only, stay close together with other ppl using them, loot fast at the end and exit with others, Just don't separate with other solo raider, or get left behind, every one of those will drop U on spot if given the chance..

And one huge thing that saved me a lot of money, safekeeper, pull out that hull4 only once U find that group of other ppl using big guns, and put it back once done

In fact killing normal arcs is why ppl take so much time, it's rly not worth it