Just solo'd as a 67 troll hunter.
I didn't really have a game plan other than keep cheetah on and haul ass.  I just kept serpent sting on her the entire time and kited up to Aeris Landing.  The guards wont help you there, but there is a large tree right by the Landing that I managed to kite Tusker around quite easily. 

Fortunately Tusker is rly slow so you just have to go into run+turn&shoot mode.
gg.