Lou's Revenge achievements

The ending: LOU agrees to Big Wac's proposal

Defeat El Roico

Rise from the dead

Complete "Steak from Hell" quest

Spend 3 hours fighting

Defeat Behemoth

Spend 100 grand

Max out the bottle bar

Don't use bottles during one level

Open 20 doors

Defeat 100 enemies with BFG

Defeat 100 enemies with a bazooka shot