I'm a lvl 67 Siren and have played most of the game through on my own but there are two missions which are impossible to do solo.
- You will die- Kill Cramerax this guy kills me in two hits -_-
- 2nd time killing Knoxx and looting the vault. He has medics the second time and since it takes 1400 smg bullets to get him to half health it's impossible.
If anyone is a high lvl player on PS3 and can help me please leave a comment or send me a PM.