Activity Points is a sub-category stat and a third-bar used on various classes, the purpose of this stat vary and the way to acquire and use it also change with the classes. Some is to increase damage or to generate bonuses, others may use as a Requisite to cast a skill, and so on.
Some classes may have AP but they wont use it at all, you can check on this page all classes that actually use it.
Activity Points are show on your character information with AP 0/X meaning X is the maximum you can store, different classes have different amount of AP. You can also see your points bellow your SP/HP bars, with a Yellow Color.
Classes
Monks - Sura
Monk Combo
For Monks your Activity Points will be used as Combo Points, and a maximum of 5 can be stored.
While fighting you can see your bar filing up, you can store all the 5 using the monk skills and expend it all at once on a skill that consumes it like Tiger Fist and Throw Spirit Sphere
Each Combo Point will buff those skill damage by a % of damage See skills.
Combo Points can be used anytime, you dont need to wait it fill up at 5.
Combo Points have no Cooldown of any kind, you can acquire points everytime you use skills, meaning the speed you cast those skills is the same you acquire Points.
On Sura you keep with the same system but your maximum points is increased to 10.
Sura also receive more skills to use and buff your Monk Skills.
Gunslinger
Gunslinger Bullets
Gunslinger Activity Points is used in form of a Bullet System. You have only 10 Bullets in all Guns.
Your points from Axe and Mecha are not shared, if you summon your mecha while with Axe points, all your points will be lost, the same apply from Mecha to Axe.
You can summon them whenever you want and have more than 1 active.
The summons lasts 30 seconds and will be with you until the time is up or they die. Each of them have different capabilities.
Check their skill page for more details.
Lord Knight
class
Lord Knight Activity Points are used with Servant Weapons and related skills.
Instead of the usually points you need to acquire and expend in skills, for Lord Knights the Servant Weapons itself are used.
When you summon them you get 5 at once, and after expending a sword you will passively gain more with time.
Only skills related to servant weapons will be used, please check Skills
Dragon Knight
Dragon Knight using her Charging Counters
Dragon Knight Activity Points are used with the Charging Counter system.
You can acquire those counters when you activate the Charging Pierce skill.
When the skill is activated almost all of Dragon Knight skills will generate Counters, until you reach 10.
Charging Counters can also be received when receiveing damage while the effect is active.
With 10 counters, the next Dragon Knight skill (excluding Spiral Pierce and Draconic Ignition) will get strengthened.
You can also visualize the counter above your head with the Red Spheres.
Bastion
Bastion with Holy Shield using Shield Chain Rush and Shield Spell
Bastion Activity Points are used for the Holy Shield system within the Holy Shield skill. Those shields mitigate any income damage directed to the character, physical or magical.
They can be passively restored back after 5 seconds. The maximum shields you can have is 4.
The shield health/durability is based on the character MaxHP and skill level, please check Holy Shield skill.
The shield health will be show at your AP count on your character info window.
Each shield has the same durability, once one of them break the next one will be used.
You can generate 1 shield with full durability with Shield Spell.
You can also consume the shield to deal damage with Shield Chain Rush or
Give them to an ally with Guardian Shield, they behave the same on Allies.
AP is then used to consistently keep Bestial Wrath active, which is a key damage increase for Beast Masters. Any surplus AP can be used by Kill Command for additional damage.
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