Peace Walker is packed with classic Metal Gear easter eggs and secrets:
- Hideo Kojima Cameo: Recruit Hideo Kojima himself in Extra Ops 067. Find him hiding in a truck.
- Monster Hunter Crossover: Unlock special Monster Hunter themed Extra Ops and fight iconic monsters like Rathalos and Tigrex. These yield unique materials for crafting Monster Hunter gear.
- Ghost Photos: In certain missions, if you take photos in specific locations, you might capture images of ghosts or other paranormal phenomena.
- The 'Love Box': A special cardboard box that attracts enemies. Developed after finding a specific blueprint.
- Chico's Diary: Collect all of Chico's diary entries to uncover more backstory and unlock certain events.
- Secret Uniforms: Beyond the main uniforms, there are several secret outfits to unlock, often tied to specific achievements or mission ranks.
- Voice Recorder Messages: Listen to all the voice recorder messages for additional lore and character insights.
Exploring every nook and cranny, and experimenting with different actions, will often lead to these delightful hidden gems. Keep an eye out for anything unusual!