If you are playing a Mastermind, make sure you bind the pet commands to your keypad. It makes controlling your guys so much easier (and I haven't even done it properly so that I can control pets individually). Linked it here.
Do the LGTF or ITF a few times (probably need to do them 4 times). Each run will take 2 - 3 hours depending on the team so you are looking at ~10 hours for the last 5 levels if you are going all-out (it'll take longer than that cause you'll want to sell, drop off loot, take breaks, etc.).
If you are on a server that does the Rikti Mothership raids you can do that too, which might be faster cause you can "sponge" some extra experience by not SKing, though you'll have trouble hitting things without enough buffs at the lower levels.
If you are on a server that does the Rikti Mothership raids you can do that too, which might be faster cause you can "sponge" some extra experience by not SKing, though you'll have trouble hitting things without enough buffs at the lower levels.
I just leeched 75% of a level by just hanging around in one of those apparently famous TV missions. I could not even touch the minions (lvl 52, lol)