Shadow Broker
Banned
I have found that doing the postgame dungeons net you good amount of exp. Doing three of them gave me 250k exp, which tripled to 750 (giving me a jump from level 73 to 84).
You can find trophy requirements on psnprofiles.com for example, or you can look to any one of the trophy roadmaps you can find on google.
You should use thr 3x exp when you have north of 150k exp, since the price is quite high and you won't want to pay it too often.
My current level is 41. Can I clear those dungeons at this level?