Below is a walkthrough for the Necromance Her side quest in Tiny Tina’s Wonderlands. To obtain this quest, speak with Wastard after the boss fight in Karnok’s Wall.
Take sewing pattern
Grab the scroll from Wastard.
Go to skeleton hot spot
Take the portal Wastard opened.
Collect bones
After defeating the skeletons, collect their request body parts. Keep doing this until he’s satisfied!
Collect hide of winged beast
Kill the wyverns until you have collected 8 leathers.
Find a tailor
Follow the objective to find Taylor and speak with him.
Hand over materials
Give your materials to this crafty tailor then wait for his masterpiece.
Take…fedora?
Grab the hat.
Go to Wastard’s lady’s place
Ring the doorbell by pulling the lever.
Destroy Cheddar’s minions
Head inside and defeat all the enemies.
Kill Cheddar
Defeat him!
Give fedora to Wastard
Head to Wastard to hand over the fedora. Watch the events unfold. Afterwards, take back the fedora to complete the quest.