As with many shooters and RPGs, a critical hit is an attack that hits a target's weak point, dealing extra damage. Nearly all enemies in the Borderlands have at least one critical hit point, and it is recommended that players find and aim for them. The bonus damage done is determined by many factors, including the weapon used, the critical hit point on the enemy, and the player's skills and abilities. Some select enemies, such as Crystalisks, cannot take damage except from critical hits.