Metal Gear Solid games are renowned for their secrets, and Portable Ops is no exception. Keep an eye out for these hidden gems:

- Cardboard Box Locations: Beyond the standard boxes, some maps have unique or strategically placed boxes that offer better cover or unique dialogue. Experiment with different boxes.
- Secret Blueprints: Many powerful weapon and item blueprints are hidden in obscure locations or dropped by specific interrogated enemies. Always explore thoroughly and interrogate every unique enemy type.
- The 'Ghost' Soldier: There's a rare chance to recruit a 'Ghost' soldier via Wi-Fi scan, often with incredibly high stats. This is a nod to previous MGS titles.
- Codec Frequencies: Experiment with different Codec frequencies. While not as extensive as console MGS games, some frequencies might yield unique conversations or hints.
- Developer Room: While not a traditional 'developer room,' some areas contain subtle references or hidden messages from the development team. Look for unusual posters or objects.
- Music Player: Unlock a music player in the main menu by completing certain missions or collecting specific items.
Exploring every nook and cranny, and experimenting with game mechanics, will often lead to rewarding discoveries. Don't be afraid to deviate from the main path!
Compare hidden items & easter eggs inMetal Gear Solid 2: Sons of Liberty