List of bugged AK skills:
Armor Breaker: debuff states it reduced the enemies defense by -20% and then -757%, however this skill does not work on actual players, it does not reduce their defense. Most likely due to everyone over capping the def.
Genocide: same issue as above, does not reduce the defense of actual players.
Achilles Tendon: same issue as above... debuff stated it slows an enemy by 45%, but this skill does not work on actual players... I've tested against naked characters.
Rondar: skill at random does no damage or just has no visual appearance. The skill also sometimes gets canceled by any skill not just cc abilities.
List of inaccurate AK skill descriptions:
Bounce defender: skill description says it gives ranged dmg res, but it does not.
Sola evil: all weapon variant debuffs except for blow does not work... instead it performs a short movement restriction.
Sonic massacre: same as above, only blow works.
Useless AK skills since A31:
Blind jab: since A31 AK's cap def with the jump set, this skill was rendered useless. Possibly change it to do something else.