Let me start by saying I love this game,
Pure and simple, the combat is fun and while it seriously lacks the social element of an MMO, I am having a blast playing it, and I've convinced 10+ of my mates to pick it up.
That being said, I've now hit 1400 EGO, finished the main story line and was quite happily working my way through the challenges.
The problem is, I cant do that anymore, a good 70% of the challanges I have remaining and broken:
Arkfalls - Reset kill counter each time
PvP - No cap/hold, Reset kill counters each time, Cant get a shadow war
Races - The Adding time problem has stopped me getting gold on 20+ attempts in which ive come in under the time for gold (This one I can accept that it might be me not being good enough, since I have seen people in the black dodge, but still if i cross the line under the time, I should get gold :/)
Reputation - The system of spending your rep points means holding onto all the rep to max it out, before I can buy anything
I'm still loving the game, but over the past few days, its turned into - Log on, do my rep missions if i can (see capture and hold above) and log off.
Yes I could grind for oranges, but the game is a cake walk (which I happen to think works in its favor) but without a proper challenge, spending time running the same simple co-op maps to get gear I really dont need doesnt sit well with me.
So really my question is, what are other people doing to keep going? I cant be the only one that is at this sort of stage?

