How to unlock Deathtank
Method 1)
Smash every toilet in Duke Nukem 3D. Deathtank should now appear as
the last option on the menu. However, I've never tried this method
so I cannot confirm it works.
Method 2)
Save a game of Quake or Exhumed (Powerslave) onto the same internal
memory or memory cart as your Duke Nukem 3D save game. Again,
Deathtank will appear as the last menu option.
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DTZ can be unlocked in two ways: 1. Destroy every toilet in Duke Nukem 3D(including the secret level, Urea 51) 2. Have a Quake saved or Exhumed (Powerslave) saved game on your system(this is the easier of the two ways as you can, if you have a Netlink, just download it off