Agility

From Seeds of Time Online Wiki

Agility is one of the five stats into which players can invest their stat points. It is essentially the counterpart of Dexterity, meaning that a high Dexterity can be countered with a high Agility and vice-versa.

Hitting or Missing

The higher your Agility, the more likely you are to evade an incoming physical attack. The chance of missing is increased as your Agility goes up and is decreased as the opponent's Dexterity goes up. At any time, the maximum chance of missing an attack for anyone can be 80%, which means that attacks always have at least a 20% chance of not missing.

Critical Hits

Critical hits are physical attacks which deal twice as much damage as usual. The chance of the enemy landing a critical hit onto you is decreased as your Agility rises, but it is increased as the opponent's Dexterity rises. This basically means that if your opponent has a high Dexterity, your opponent will land critical hits onto you often unless you have a high Agility to counter it. If your Agility is very high compared to the enemy's Dexterity, then your enemy will very rarely land critical hits onto you.