Slayer set:

Critical Chance +30%
Increased DEF +30%
Increased HP +25%
Parry +30

Seraph set:

Increased HP +30%
Increased DEF +30%
Decreasing Casting Time +30%
Melee Block +15%

Arcanist set:

Decreasing Casting Time +30%
Melee Block +25%
Increased HP +30%
MP +100

Templar set:

Increased HP +30%
Melee block +30%
Ranged Block +30%
Incresed DEF +25%

Mentalist set:

Decreasing Casting Time +30%
Melee Block +15%
Increased Defense +25%
Increased HP +30%

Force Master set:

Increased Defense +30%
Increased HP +25%
Melee Block +20%
Ranged Block +20%

Harlequin set:

Additional Damage of Critical Hit +30%
Increased Hit Rate +30%
Critical Chance +25%
Increased HP +25%

Ranger set:

Critical Chance +30%
Melee Block +15%
Increased Defense +30%
Increased HP +25%

Good guide for newbie

Harlequin Set ~ 4/4: ADOCH 30%, Hit Rate 30%, Critical Rate 25%, Add HP 25%

Force Master ~ 4/4: Add Def 30%, Add HP 25%, Block Melee 20%, Block Ranged 20%

Thanks a lot Natred, I will edit my post