Adrenaline

Certain Warrior skills are fueled by adrenaline rather than Energy. It is gradually built up each time the Warrior hits or is struck in combat, each such blow being added to the characters adrenaline level. Some skills increase the rate of adrenaline build up, while others expend it entirely.

Adrenaline Points
Adrenaline is not actually gained in strikes, but in points. Every adrenaline skill stores its own adrenaline points displayed by rising flames from 0 till fully charged. See this table for approximate number of adrenaline points needed for skills.

1 4 "strikes" on Cleave do not equal 4 "strikes" on Sever Artery. The "points needed" row increases linear, the "adrenaline strikes" numbers in the skill descriptions are a simplification. A "strike" of adrenaline in the skill description equals 20-25 points. A real "strike" of adrenaline gives 25 points.

Gaining adrenaline
You gain 25 adrenaline points for every of your attacks that hits and you gain 1 point of adrenaline for every 1% health lost from your maximum. Every 25% of your health lost gains approximately 1 "strike" of adrenaline--the equivalent of an attack landing. Note that this includes ranged attacks and excludes health degeneration. Commonly 4 strike skills are charged in about 3 hits time, because you take some damage at the same time. Gaining adrenaline means every adrenaline skill in your bar gains that much points.


 * Soothing Images sets all adrenaline gain to 0. You can still use adrenaline attacks under Soothing Images if they are charged, it just prevents you gaining any more adrenaline until it ends.

Using adrenaline
You can only use adrenaline skills that are fully charged with adrenaline. They cost 0 Energy. When you use an adrenaline skill all adrenaline skills in your bar lose 25 points, you should just get them back with your next hit, caused by the used adrenaline attack, or by taking as much damage as 25% of your maximum health.

Losing adrenaline
Losing adrenaline means every adrenaline skill in your bar loses its full load of adrenaline. You lose all adrenaline after you do not take any damage and do not attack for 20 seconds.
 * Some skills cause "...lose all adrenaline." Examples include: Hammer Bash, Heavy Blow, Wild Blow, and Final Thrust.
 * Sympathetic Visage causes a loss of ALL adrenaline when a target enchanted with it is struck.

===Skills that

Reference
Research done by Ensign and Silmor. Original GW Guru thread.