[Origin] Invincible Giant God Karlach

Multiplayer friendly regarding boons and items

Elexir of colossus (pretty cheap) and get max size with rage

Also works with lvl 12 cap (10/2) but a little bit less AC (28)

Mirror of loss (if possible) Dex+2 for an extra +1 AC or STR +2 for more damage and distance jump

Easy Class + Easy Honor Mode

Leveling: Start as a standard Throwzerker until lvl 6 then respec for Giant.

Early game items and alternatives:
Returning pike, Gloves of Uninhibited Kushigo, Lightning Jabber, Ring of Flinging, Caustic Ring, Snowburst Ring, Periapt of Wound Closure Amulet, Marksmanship Hat