Skills

Skills are an in-game ability that allowed you to do more than hack and slash. Obtaining these skills are obtained through levelling up in the game, some rumours are about that some skills are given through individual weapon skill levels, this has not been confirmed.
Slash - Slash is the very first move all players obtain is SAO:PE. It is a move that allows a user to use a downward sskill
Night Vision - At level 5, a player will receive this skill. It server no other purpose than illuminating your character within a 10-stud radius with a green light during night-time in the game. This power is toggled once you enter a lighted area, but seems buggy on it's detection of light.
Combat Healing - Upon reaching level 40, players will obtain this skill. It will heal a small portion of a player's health every 20 seconds or so. I believe that the portion of the HP given depends entirely on the player's overall HP. There seems to be a glitch that will sometimes heal you completely when activating the skill.
(PURE RUMOR) Some reports say that once a player reaches level 100 or has level 80 in straight swords, they can obtain the Dual Wielding skillskill and you might be able to use star burst stream were not sure
*Note - This is just what has been gathered from the community, there may be more skills.