In general, skills must be equipped in a limited amount of skill slots. Kirito at the end of SAO had 12 skill slots. Skills may be trained up to level 1000, at which it is considered «Mastered». There is rumored to be an unlimited number of skills in Sword Art Online.

Non-Combat SkillsEdit

Fishing

Musical Instrument

Sewing

Cooking

Equipment Appraisal

Tools Appraisal

Purchase Negotiation

Sales Negotiation

Medicine Mixing

Slash Weapon Forging

Thrust Weapon Forging

Blunt Weapon Forging

Light Metal Armor Forging

Heavy Metal Armor Forging

Metal Equipment Repairing

Metal Refining

Familiar Recovery

Familiar Communication

Passive SkillsEdit

Searching

Tracking

Pursuit - Raises effectiveness while hunting monsters. Sword Art Online Kirito Sword can be used to pursue a player whose name is known by displaying their footprints from a certain time, which can be increased with greater mastery of the skill.

Listening

Detection - Prevents ambushes. Greater mastery allows detection of monsters in «Hiding» status.

Hiding - Allows for a person to disappear. Only works on targets that use visual tracking.

Acrobatics

Night Vision

X-Ray Vision

Sprint

Extended Weight Limit