Cardboard Box- It’s useful, when you want to past by the guard undetected.

Unfortunately - it’s mostly useless.

Cigarettes- integral Metal Gear Solid series item.

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Smoking allows Snake to recover Psyche.

It also reduces his health.

Compress- it boost Psyche for a short period.

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Instant Noodles- it helps you regain Health and Psyche, however in lesser degree.

In room temperature these regain factors equals 100% for Health and 50% for Psyche.

During Alaska mission Psyche regains only by 25%.

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iPod- well, it’s a product placement.

Metal Gear MK.II/MK.III- it’s a robot constructed by Otacon.

It can also be connected to computers panels with a special port.

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Military Ration- allows you to regain 75% of Health and 5% of Psyche.

Muna- it’s a herb from South America.

It raises your Psyche level.

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Oil Drum- a friend of a cardboard box, but allows you to ram your enemies.

Pentazemin- drugs for snipers.

It stops your hands from shaking.

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Regain- it works exactly like Instant Noodles.

It shows on map positions of the enemies, which you knocked out using CQC and scanned.

Solid Eye- optical multitool.

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It is equipped with night vision, binoculars and shows enemy positions on map.

Syringe- it regains 100% Psyche.

But watch out - the longer Snake uses it, the faster his mood is getting ruined.

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Stealth Camouflage- Drebin demands 5 million points if you want one.

If you don’t have this amount of money - finish the game without raising the alarm.

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Metal Gear Solid 4: Guns of the Patriots