From right to left: Very Easy, Easy, Normal and Hard/Extreme.

The enemy range of vision is very long on E-Extreme.

From right to left: Very Easy, Easy, Normal, Hard/Extreme and E-Extreme.

• On Very Easy, rations are a full heal
• On other difficulties, rations heal half of max health (37 points on Hard)
• E-Extreme has no rations at all

General damage table:

• Guard Shot: 10
• Guard Melee: 5
• Explosion (Further): 20
• Explosion (Closer) / Shotgun: 40
• Bleeding: 1 / 3s at 1/3 health (rounded down if necessary)
• Smoking: 1 / s
• Choking: 1 / 0.25s
• Chaff/Stun explodes in player's hand: 10

Damage dealt by bosses often varies by difficulty.

*Planted claymores picked from the ground give +1

• Chokes to KO = Punches to KO - 1 (e.g. Normal guards take 9 chokes to KO)
• Pistol punch = 2 punches (only the second punch has increased damage)
• Rifle punch = 3 punches
• Roll = 3-4 punches
• Kick = 4 punches (Raiden's double kicks combined still equal 4)
• Nikita punch = 10 punches
• Limb shot = 0.5 body shot
• Explosion = 3 body shots
• A rifle punch to the head immediately knocks an enemy out.
• Additional tranquilizers halve the time to go to sleep.
• Waking guards up: shooting > coolant spray > pick up & drop

• Olga has 128 health on all difficulties
• Olga cannot be auto-aimed on Extremes
• On Easy and Very Easy, she will bleed 4HP/s after a hit until 64HP.
• Meryl replaces Olga in Snake Tales

• Her railgun deals 40 damage from Very Easy to Extreme
• On E-Extreme, it actually deals less: 27 damage
• She fires two shots at a time on Extremes

• Fatman's attacks (pistol/bumping) deal 5 damage from Very Easy to Hard
• On Extremes, his attacks deal 6 damage
• Also on Extremes, Fatman ambushes the player at his bombs much more actively.
• He deals double damage if he bumps into the player while spinning
• On Normal and below, first person shooting locks on to his head
• Fatman sometimes drops Socom ammo when knocked down on easier difficulties.
• Fatman's boss fight in Snake Tales in the same as on Hard, except first person locks on to his head and 3 M9 headshots are possible

• The Stinger deals at base 175 damage to the Harrier regardless of difficulty
• On Extremes, the cluster bomb always leaves the player on 1 HP and on fire
• Also on Extremes, the vulcan cannon attack includes a missile

• Vamp has 128 HP on all difficulties

• Vamp 2 has 100 HP on all difficulties

• Snake can take 15 hits during the first fight and the second on Normal and below
• On Hard and up, Snake can take 13 hits during the second Tengu fight
• On Very Easy, the player gets full ammo before the Tengu 1 fight.

On all difficulties:

• A single RAY has 1024 HP
• A RAYs machine gun deals 16 damage (halved by Body Armour)
• Water cannon deals 24 damage
• A RAYs stomp deals at least 48 damage

• Punches deal 1 damage to Solidus on all difficulties
• Kicks deal 2 on Normal and below, 1 on Hard or higher
• Solidus's tentacle sweep deals 1 damage on all difficulties

Normal and below (The player goes to the south end of the room)

Hard (The player goes to the space with the scuba gear by hanging)

Extremes (On the west wall)

Roof of strut A. The red dot. Sprayed through the fence

Strut E. Attached to the northern part (Extreme) or eastern part (Hard) of a moving box.

Strut D. Under the hatch at the northern part of the room.

Strut D. Eastern part of the room under the platform. NG and NG++

Strut D. Northern part of the room under the platform. NG+

On Hard and below, the strut F bomb is against the wall.

On Extreme, the bomb is attached to a box making it possible to spray it from the ground.

*In the HD version, Solidus's torture only lasts ~10-15s on all difficulties.

• Enemies don't quit a hold up on their own from Very Easy to Normal. They do from Hard to European Extreme.
• Some cameras now rotate.
• Deck B Hatch no longer opens.
• On Extreme, the player cannot shoot the tarp or the lamp during the Olga fight.
• Strut B has cameras when it's entered after meeting Stillman.
• On Extreme, there are already ciphers on the EF connecting bridge when it's first entered.
• Strut E contains extra cameras.
• The president is sleeping and he has to be woken up with explosives.

• On Very Easy, the player doesn't have to log on to a node for the radar.
• The M9 can be obtained at strut A on Very Easy and Easy.
• On Very Easy, alert/evasion/caution goes away after entering another room.
• Guards don't come to check the situation after the Harrier fight on Very Easy.
• The Nikita's locations varies slightly by difficulty.
• The time Snake appears to help Raiden during the sniping section varies by difficulty.
• On easier difficulties, the floor boards on the EF connecting bridge respawn for when Shell 1 is re-entered.

The following table shows the maximum stats you could have for the top ranks from the difficulties Easy to European Extreme on Tanker-Plant only (Very Easy does NOT have a Rank 1). These were taken by bmn from the PC Port of Substance:

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