Do you have Trozan’s set? If you are short on gear, there is a beginner’s cold Warlock guide from Monceaux ([1.1.9.2][Guide] Trozan's Ice Shards - A cold Warlock Beginner Guide) that you could follow until you have full Trozan’s or Iskandra’s sets. Its final setup uses the Eastern set which is quite easy to get even as your first character.
This message is 1 month late though.