Adrenaline

Adrenaline is a new powerup system introduced in UT2003 and carried over to UT2004. Adrenaline is collected by picking up adrenaline pills and by in-game events, such as killing opponents or completing game objectives. Once 100 adrenaline points have been collected, a sequence of presses of movement keys will activate an adrenaline combo, which gives the player some sort of advantage for a period of time.

In UT2003, adrenaline pills give 3 adrenaline points, while in UT2004 they only give 2.

In UT2004, when the player is carrying the bomb or flag, adrenaline combos run out faster.

Most competitive games have adrenaline disabled. A notable exception is TAM, where adrenaline is a key part of TAM strategy. Additionally, adrenaline is disabled by default in Onslaught and Assault games.

Adrenaline combos

In the listing below, U, D, L, and R mean, respectively, the Up, Down, Left, and Right movement keys.

• UUUU: Speed: Increases the player's running speed and jump height. In UT2004 (but not UT2003), this combo runs out faster than the others.
• DDDD: Booster: gives the player 5 health (or if health is at a maximum, shield) per second or so, eventually giving 175 total health and shield.
• UUDD: Berserk: increases the firing rate and knockback of all weapons. This includes shield jumping; berserk shield jumps can propel players to astonishing heights.
• RRLL: Invisible: makes the player (nearly) invisible.

Additional combos enabled via mutators

• RRRR: Camouflage: projects a very conspicuous object (a column or rock, depending on the surroundings) around the player. Largely ineffective.
• LLLL: Pint Sized: makes the player smaller.