The Abyss

The Abyss is the RPG-like system of building stats and battling NPC's/other players.

Stats
The following are all stats included in the abyss:

VIT
VIT, referring to vitality, is one of the main two stats of the abyss. Vitality affects your HP (Health Points) and PDEF (Physical Defense). It can be increased using a Vitality Crystal or an Ultimate Crystal and does not possess a cap.

SP
SP (expansion unknown) is one of the main two stats of the abyss. SP affects MDEF (Magic Defense) and Damage (except when using reflecting abilities). It can be increased using an Amplifier Orb or an Ultimate Crystal and does not possess a cap.

Physical Defense
Physical defense is a secondary stat that affects damage received and sometimes damage dealt (when using Aegis or Pridwen). It only affects damage dealt by abilities of the types 'SKILL' and 'ESPER'. It can be increased using an Anneal Crystal or a Guardian Crystal.

Magic Defense
Magic defense is a secondary stat that affects damage received and sometimes damage dealt (when using Aegis or Pridwen). It only affects damage dealt by abilities of the type 'MAGIC'. It can be increased using a Resistance Orb or a Guardian Crystal.

Stability
Stability is an extra stat that stabilizes damage dealt. Stability can be increased up to 40% using a Potion of Stability and 1% per level, capping at another 40%. Stability cannot exceed a total of 80%.

Base Damage Rate
Base damage rate is an extra stat that increases final damage dealt. Unlike SP, base damage rate applies after stability and RNG, therefore buffing the final damage before defense. It can be increased using an Ultimate Essence and does not possess a cap.

Crit Damage Rate
Crit damage rate is an extra stat that increases damage dealt on critical hits. Crit damage applies after base damage rate is applied and also ignores the defense of the enemy, thereby being more effective than base damage rate. It starts at 150% and does not possess a cap. It can be increased using a Dragon Wine.

Ascension
Once a player reaches level 40 (160,000 EXP), they undergo ascension which affects various parts of the abyss. Ascension is irreversible.

Ability
After ascension, the player's available pool of abilities is replaced with an advanced pool of abilities. Ascended abilities are much stronger than their lesser version, sometimes being completely different in nature. After ascension, any ability rerolled with a Reroll Ticket will be ascended as well.

Abyss
After ascension, the NPC enemies encountered in the abyss will possess ascended abilities as well, becoming much stronger than their lesser counterpart.