Increase Life Leech with Melee attacks and Goin' Constructor based on the percentage of your missing Health. Additionally, Melee and Goin' Constructor eliminations have a chance to conjure a Phantasm (targets a nearby enemy, dealing damage in a 0.5 tile radius).
Melee "Arleen" Izza loadout that utilizes halloween team perk. Use whichever Fortnitemares heroes you'd like. This is just what works for me, personally.