# Mechanics
Combat is a first-person 3D duel aiming to reduce the opponent’s health points (HP) to zero with shuriken throws.
## **Hits**
When a player hits a target, the affected body part glows red, kicking off an injury countdown. A sound plays, and damage numbers appear from the HP bar. Critical hits or headshots trigger unique visual effects.
## **Fatigue**
Fatigue begins at zero and climbs with each shuriken throw. At its max, a 2-second cooldown blocks further throws. If the player pauses throwing, fatigue drops after a 1-second recovery. The number of throws before max fatigue depends on the weapon’s stats.
## **Shield**
Players activate a shield by holding a finger at the screen’s center, absorbing 90% of incoming damage. The shield fails when its capacity hits zero, and throws are disabled during use. Capacity regenerates over time, and the shield activates when hitting the player’s collider.
## **Movement**
Players face each other directly, moving via a “pizza” system of point-to-point shifts. They can move left or right from the center by swiping or tapping an indicator, up to a max distance of one ray, if a point is available. Movement also adds fatigue.
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