What I did was went into Harclave used my normal weapon to get to the arc then once I got the Spirit of Harclave I changed to my spear. I only used heals and wards to let the fights last longer. Most of the time the mobs were getting killed off by the DS you get but I would hit from time to time and after a while it started going up a bit faster. I currently have my skill maxed and when I level I rotate between my Prismatic LS, RGF, and Spear (I think DeathKnell is the name of it was a quest item) In about 20 minutes from when I level I normally have all 3 skills maxed again.