Rebreather

From QuakeWiki

In Quake 2, the Rebreather is a powerup that allows you to breath underwater for 30 seconds. After the timer is up, the game will act like you just jumped into water, so find some air quickly!

[edit] Strategies

Despite how useful it seems, the Rebreather is only useful near the end of the Prison hub and in the last level in the Hangar hub. Otherwise, you'll never need to use it.

Items in Quake 2
Powerups	Quad Damage · Invulnerability · Silencer · Megahealth · Rebreather · Enviro-Suit · Bandolier · Ammo Pack · Enviro-Suit
Armor	Jacket Armor · Combat Armor · Body Armor
Misc	Stimpack · Armor Shard · Key