Critical Hits increase damage dealt by 25% compared to what the normal amount would be. An additional 20% damage can be added by linking with one of Fiora's skills. Critical Rate is the probability that an attack will score a critical hit. During an attack, the total Critical Rate basically consists of the base character's Critical Rate plus the weapon's one. Furthermore the Critical Rate can be increased with Critical Up gems, with certain skills, or by the use of certain Battle Arts. Additionally, landing a Critical Hit increases the Party Gauge slightly.