Skills can be obtained levelled up using skill points gained as your character levels. There are no right or wrong skills to use. Choosing the best skills depends on what type of player you want to be.
Crusader's Blow – Physical attack that also casts one Mark of Pariah.
Righteous Prayer – Long range magic attack.
Retribution - Small physical attack that also causes any current Marks to explode and damage the enemy.
Overcome – Reduces damage collected in Barrier by up to 50%.
Prayer – Restores up to 20 cannons.
Canon Of Light – Uses 2 cannons to regenerate health over a period of time.
Challenge – Forces the target to attack you specifically for 10 seconds.
Condemnation - Causes any current Marks of Pariah to damage enemy, causes small physical damage and damages the enemy over time.
Healing Touch – Instantly heals an ally for the price of 3 cannons, also causes you to suffer a speed debuff.
Strike of Justice - Rush to target with a physical attack that stuns them.
Purge Pain – Damage stored in a barrier runs out without breaking the barrier.
Tenacity – Reduces damage in the first barrier slightly while also making it the last barrier.
Absolution – Damaged stores in all barriers is distributed among them equally.
Power f Light – Costs 4 cannons. Heals a certain amount of your party – amount depends on the level of your skill.
Penance – Cause Marks of Pariah to damage enemy, while also silencing them temporarily. Also creates some cannons during battle.
Light Nova – Costs 6 cannons to heal all party members.