Item

Doom
The items flagged with a percent sign (%) count toward the ITEMS percentage displayed at the end of each level and the ones flagged with a number sign (#) are always picked by the player when passed over, even when not needed.

Health

 * See also: Berserk pack (below)

Other

 * Weapons: Once acquired, weapons are retained until death, end of episode (Doom 1) or end of game (Doom 2). However, they require the appropriate ammo to be operational.


 * Ammo: The status bar shows a running count of each of the four ammo types: bullets, shells, rockets and cells.


 * Keys: The red, yellow and blue keycards and the red, yellow and blue skull keys are used to open locked doors. Keys are retained until end of level.

Doom 2/Final Doom
Doom 2/Final Doom has all of Doom's items and adds the following:

Health

 * Crystal vial

Armor

 * Enchanted Shield
 * Silver Shield

Items

 * Map Scroll

Artifacts

 * Chaos Device
 * Morph Ovum
 * Mystic Urn
 * Quartz Flask
 * Ring of Invulnerability
 * Shadowsphere
 * Time Bomb of the Ancients
 * Tome of Power
 * Torch
 * Wings of Wrath

Keys

 * Blue Key (Heretic)
 * Green Key (Heretic)
 * Yellow Key (Heretic)

Health

 * Crystal vial

Armor

 * Amulet of Warding
 * Falcon Shield
 * Mesh Armor
 * Platinum Helm

Artifacts

 * Banishment Device
 * Boots of Speed
 * Chaos Device
 * Krater of Might
 * Dark Servant
 * Disc of Repulsion
 * Dragonskin Bracers
 * Flechette
 * Icon of the Defender
 * Mystic Ambit Incant
 * Mystic Urn
 * Porkalator
 * Quartz Flask
 * Torch
 * Wings of Wrath

Puzzle items

 * Clock Gear (Bronze And Steel)
 * Clock Gear (Bronze)
 * Clock Gear (Steel And Bronze)
 * Clock Gear (Steel)
 * Daemon Codex
 * Emerald Planet 1
 * Emeral Planet 2
 * Heart of D'Sparil
 * Liber Obscura
 * Pedestal of D'Sparil
 * Ruby Planet
 * Sapphire Planet 1
 * Sapphire Planet 2
 * Yorick's Skull
 * Yorick's Statue

Mana

 * Blue Mana
 * Combine Mana
 * Green Mana

Keys

 * Axe Key
 * Castle Key
 * Cave Key
 * Dungeon Key
 * Emerald Key
 * Fire Key
 * Horn Key
 * Rusty Key
 * Silver Key
 * Steel Key
 * Swamp Key

Quest things

 * 10 Gold
 * 25 Gold
 * 50 Gold
 * Broken Power Coupling
 * Communicator
 * Computer
 * Gates (Piston)
 * Gold Coin
 * Guard Uniform
 * Offering Chalice
 * Officer Uniform
 * Power Coupling

Keys

 * Base Key (Front)
 * Blue Crystal Key
 * Blue ID Card
 * Brass Key
 * Chapel Key
 * Core Key
 * Factory Key
 * Gold ID Badge
 * Gold Key
 * Mauler Key
 * Mine Key
 * Oracle Key
 * Order Key
 * Red Crystal Key
 * Severed Hand
 * Silver Key
 * Travel Passcard
 * Warehouse Key