Update 4 - Scintillating Caves & Rhaloren Camp + Trollmire (4)

Head wayy back West and go to the South West corner
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Scintillating Caves
You should almost 1-shot everything in here
Boss: Spellblaze Crystal
He should go down in a few arrows

Level 11
Stats: Magic + 2, Dex + 1
Chronomancy / Stasis
Time Shield 4
Chromancy / Chromancy 
Contingency 2
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Rhaloren Camp
Same with the last one, but watch out for the special rooms, some of the enemies can be tough. Don't forget to pop the Time Shield.
Boss: Rheloren Inquisitor
Open the door and shoot away, he should be dead before he can even walk over to you.

Level 12
Stats: Magic +1, save the rest
Chronomancy / Temporal Combat
Weapon Manifold 1

Now head back North to Trollmire (4), but first stop off at:
On the way talk to the Novice Mage and hand in a magic item if you haven't already.
Stop into Derth and talk to the Shady Cornac, then take the alchemist quest for whichever potion you want
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Trollmire (4)
Boss: Bill The Stone Troll
By now your Time Shield should be so strong he can't break through it.