The information is available at the official site. All you need is a good Korean Translator
Booster Speed Increase(Jumping/Dashing)
Walking Speed Increase
Attack Power Increase(Slightly)
Defense Increase(Slightly)
Increase Defense against conventional weapon(moderately)
Increase Defense against beam weapon(moderately)
Weapon reload/recharge speed increase
Sniper Weapon recharge speed increase & auto critical when in scope mode
PvP match reward at 1.5 normal rate when you lose a match
Maximum Damage for all attack & special bar accumulate rate increase(only active at 50% health)
Increase Defense Greatly(Only active at 30% health for A&B rank, 40% for C rank)
Booster speed and duration increase greatly(Only active at 20% health)
Incease special attack power(Only active at 20% health)
Infinity ammo for weapon slot 2(Only active at 10% for A rank, 18% B rank, 25% C rank)
Infinity ammo for weapon slot 3(see above)
Movement & Reload speed increase(Only active at 10% for A rank, 15% B rank, 20% C rank)
Increase Booster duration and attack power(Team skill)
Increase Booster duration and defense(Team skill)
Show everyone location on your map(Team skill)
Give melee attack a chance to critical
Cannot be lockon & not showing up on radar(Only active at 40% health)
Increase defense against specific type unit
immune to negative status effect
New skill, not sure
Movement & Attack speed increase(only active at 50% health)
Movement speed & Special attack power increase(Only active at 50% health)
Booster Duration increase(Greatly)
New skill, not sure
Random addition damage for machine gun
Now, you can increase 1 pt of your unit stats each time you reach maximum level.
공격력 Attack Power 민첩성 Dex
스피드 Booster Speed & Duration Hp
필살기 Super Attack Power 방어력 Dfp