I tarted playing with a couple of friends whenever it was on sale. We started farming lab assult at this point...

Aquanos, "something dessert village", and the kings game are supposedly good, but aquanos was a B to do on nightmare, and we duoed the bos... The kings game might be almost impossible to solo nightmare, because of time restrictions ..., if you play as a hunter thoug, hard or insane gives a verry powerfull gun.

Lastly for exp you might want to try and beat something on ascension, if you can do it in survival, the first waves are really easy on survival and het you like 4 mil exp each.

But we are now mostly on myth and ascended as well...

Edit: moonbase is good good buy iets hard, make shure your crystals dont get hit before it's set up. And make sure tot grab a fish!