Duke Nukem 3D: 20th Anniversary World Tour

This is unlocked in the level ‘High Times’ in Episode 5. When the level starts, activate the cheat menu. Select ‘Give All’ and turn ‘God Mode’ on.

Walk straight across the bridge and turn right. Up on your left is the “Little Green Man Coffee Shop.” Use the blue key card to enter. At the back of the room is the VIP room. Use the yellow key card to gain access to it. When you open the door there will be an Enforcer. Once you kill it, standing on the table in the center of the room is an alien hookah. Walk up to it and press to use it and the achievement will unlock.