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Duke Nukem 3D Hints
Where is the red card?
1 of 6: The red card will open the door at the top of the steps in the sewage area.
2 of 6: This is the sewage area you will get to after you escape from that corridor.
3 of 6: In any case, look for the spinning cogs.
4 of 6: Get between the teeth, and wait for an opening.
