A Skill Finish is a bonus received when defeating enemies using skills. If an enemy is defeated with a skill, you’ll regain 100% of the SP that skill required instead of the standard 50%, and minor healing items will spawn to help recover any lost HP.
An Excellent Kill is a bonus received when an enemy is defeated by the attack type it is weak against (Slash, Strike or Pierce). Enemies defeated with an Excellent Kill drop all of their items and gold instantly, without the need to attack their remains. In addition, they also drop rare items more frequently, as well as additional gold.
An Aerial Combo is a bonus received when an enemy is attacked after being launched into the air. This results in attacks dealing additional damage, as well as gold, SP and life energy bonuses.