Since you have started fresh, just level in the Warrens, that will level and faction you up real fast. I have a 24 Human Cleric of Innoruuk. The quest items are quite fun.
Free Fear Kiting
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https://wiki.project1999.com/Terror_Forged_Mask - Free Fear
https://wiki.project1999.com/Innoruuk_Symbol_Quests - Free Snare
Free Instant Cast Cooldown Refresh, See Invis, and Infravision for your terrible human eyes
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https://wiki.project1999.com/Fright_Forged_Helm
Fear kiting on a Cleric is quite fun, it makes you feel kind of like a Shadowknight with Blood Ember Boots and Blood Ember Gloves (except the Necklace snare is worse sadly).
You can Fear Kite and Melee up to around 40 with this setup probably. No need to only target undead either. The Snare/Fear is free, so you basically just save all your mana for Heals, Stuns, Damage Spells, and Buffs.