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
Both doors in the Boiler Room are locked! How do I get out?
1 of 4: Have you tried both doors repeatedly?
2 of 4: Have you fully explored the room?
3 of 4: After you finish off the first few attackers, wander around the room until several trites appear and attack.
4 of 4: Right after that, the door to Boiler Room Monitoring will unlock.
