I Solo’d without dying after multiple and I mean multiple attempts. You have to learn the rhythm of each encounter. I recommend anti barrier pulse for vandal snipers. Arc smg and sword combo for phalanx then switch to unstoppable hand cannon and xenophage for captains and unstoppables. Use environment for cover and be strategic. Xeno also kills vandals in one shot so that can make life easier in the second room. For the boss room after the jumping area I used gnawing hunger and a kinetic bow with xenophage. Use the platforms left or right of boss until immune then quickly get back to beginning area and methodical kill the shielded guys. Save one to farm for heavy bricks. But there are two shielded knights that xeno takes out in 3 shots as long as the hobgoblins don’t make them immune. Use bow to take out hobgoblins then xeno for knights after clearing the shielded guys. Use the semi safe spot at beginning to peak and shoot. It really becomes fairly easy with proper mods gear and strategy. It was frustrating the first several times I played it spent hours in 2nd room learning. Now I feel stupid for how quick and easy that room is. Went in blind and actually thought the two unstoppable room was final room died endlessly at first until using proper gear and mods and cover. Oh forgot to mention use the middle upper platform in that room with two unstoppables to peak and shoot makes it a lot easier. Just have some patience and learn from mistakes. It’s actually really fun. Don’t give up and good luck. One of the better activities at the moment. If one PlayStation or PC I would be happy to teach you this strategy.