I like the fact that the kill quests are brief in number, like kill 3, 4 or 5 of a given group. I haven't seen anymore then that (Chaos side).

I did pause my Zealot to see what playing a DoK is like and I enjoyed the quest where you use that ballista type of bow to sniper the approaching high-elf infantry. Once I killed the 4 the quest was complete and it kicked me off the ballista. Pity, i was enjoying it.