Looking to max my assassin, need help rushing my levels.

Maybe I'm still underlevel and need to be at max level on all roles to 99.Maybe the official guide isn't helpful or did I rushed.

I did my 1k in under 16 hours for sure and thats 100%ing my first playthrough then rushing new game plus story missions to get the last achievement (max level) I'd love to know my actual play time because dout it's very high at all.

Level 37 Zero, Assassin. Always looking for others for my 2nd runthrough. Just don't be an Assassin, trying to do class diversity. It's not really fun when it's 4 of the same class.

I'm looking to finish/start the moxxie missions. I also need to take down Crawermaxx. I prefer to play my max-level soldier for the underdome missions, but have a lower-level Siren around 31 or so that I don't mind grinding with. And I play legit too, no
mods here.

My only problem is people refusing to play the game. On any level they rush through the whole map, never pulling the trigger, and hitting X on the objective. Or of course looting all weapons chests.

.

level 50 mostly gets low level leaches looking to level up.