Quake II/Items

Health

 * Stim-Pack - increases the player's health by 2 points, even above the maximum
 * First Aid - increases the player's health by 10 points, up to the maximum
 * Medkit - increases the player's health by 25 points, up to the maximum
 * Adrenaline - adds one to the player's maximum health and sets health to that new level
 * Mega-Health - increases the player's health to a large amount, which then decays over time to the current maximum

Armor

 * Armor Shard - adds a tiny number to the player's armor level, up to the maximum
 * Flak Jacket - adds a small number to the player's armor level, up to the maximum
 * Combat Suit - adds a medium number to the player's armor level, up to the maximum
 * Body Armor - adds a large number to the player's armor level, up to the maximum
 * Power Shield

Ammunition Storage

 * Bandolier - increases somewhat the amount of all kinds of ammunition that the player can carry
 * Backpack - increases the amount of all kinds of ammunition that the player can carry to the maximum for the game

Access

 * Red Key
 * Blue Key
 * Security Pass
 * Data CD
 * Data Spinner
 * The Commander's Head - find this in the Research Lab and take it to the Outer Hangar to gain access to the Inner Hangar

Other

 * Silencer
 * Environment Suit - protects the player from toxic waste for 30 seconds
 * Invulnerability - renders the player invulnerable to all damage for 30 seconds
 * Rebreather
 * Quad Damage - quadruples damage dealt by the player's weapons for 30 seconds