I cant figure out what they actually want me to do for guardian rank 8 seasonal activity or exotic quest on highest difficulty.
#What activity counts for the "seasonal activity on highest diff" requirement for rank 8?
chrome latch
cosmic burrow
Gms probably
chrome latch
It isn't GM because there are people already at rank 8 and GMs are not unlocked yet
cosmic burrow
Maybe ur moving too fast? 
Nah I’m not well enough informed to give an answer here. Good bye
jovial narwhal
The mission for vexcalibur on legend will work. Eventually the seasonal missions will get a legend mode that you can use for those too.