Go to the laundromat to upgrade your sledge hammer.Laundromat is a washer place, located on first island of Paper Thin City. there are 2 tables, a magazine and a cash register but no cashier. You can upgrade your sledge hammer to a Super Sledge.
Lark - Nothing, Sitting in a chair and talks about Vinnie
Cain - Nothing , talks about nigerian prince
Wetside Gangster - A team from Gangster HQ, looks at the washer