Game feels pretty frustrating at the moment, at least the campaign world that spawned for me. I just got to the Root Mother encounter, and after a couple attempts it doesn't feel like its doable solo. Though I've since found it is a timed encounter, so maybe I can do it just by using pots / running around / keeping aggro long enough.
Not sure what others have experienced, but so for the game feels like bullet sponge hell, if only due to the number of mobs that come at me whenever I aggro anything. Mobs will just keep spawning and all of them take 3+ shots from either weapon. The repeater pistol I have is upgraded to where I cannot find the next tier of material needed (forged iron), secondary weapons are at one notch below, and same goes for armor.
The "dungeon" I had to get through to finally reach the Root Mother encounter was a real PIA due to the number of mobs, and the elites that would spawn (the Screamer which spawned like 4-5 new adds each time it yelled was super annoying). Game really should be called "Add Spawning Game 1.0".