From EOGamer Lineage 2 Wiki
The following tattoo modifications are avialable.
|CON||(Constitution)||maximum HP, carrying capacity, HP regeneration rate, resistance to poison, etc.|
|DEX||(Dexterity)||accuracy, critical rate, attack speed, movement speed, evasion, speed and recharge of physical skills, resistance to dryad root, etc.|
|MEN||(Mentality)||maximum MP, MP regeneration rate, magical defense, resistance to sleep, etc.|
|STR||(Strength)||physical attack, resistance to curses|
|WIT||(Wit)||casting speed, magical critical rate, speed and recharge of magical skills, increased % XP resorted in resurrection|
Details on each are as follows: