Get quick and convenient access to just the hints you need for DOOM 3, without staying on our website. Just download a free trial
version of our UHS Reader software and
a copy of these hints. You will get the
same gradual hints you see here -- unlike ordinary cheats or a
walkthrough that can spoil your game.
You can also buy the full version of the UHS Reader
for Windows or macOS. For just $14.95, you get full access to hints for
hundreds of games and 1 year of free updates. You can also search, decode, or print an entire
game's worth of hints at once.
Ask the Author
If you have questions about a puzzle that aren't answered
anywhere in these hints,
you may contact the author.
DOOM 3 Hints
How can I open the north central door in the CPU Complex?
1 of 4: It's locked at first.
2 of 4: There will be monsters in the room -- deal with them.
3 of 4: The door will unlock after you finish them all off.
4 of 4: NOTE: You may have to move about the room to get them all to appear.