Crit
Πιθανότητα crit = LUK × 0.3 + 1.0% (base). Ένα crit προκαλεί ×1.4 damage και ΑΓΝΟΕΙ και τα δύο DEF — έτσι τα crit builds προσπερνούν ανθεκτικούς στόχους. Το LUK του στόχου λειτουργεί ως crit shield και μειώνει την πιθανότητά σας, το Katar διπλασιάζει την πιθανότητα crit.
Formula and base
Crit (critical hit) is a special strike that pierces an enemy defense and deals more damage. In uaRO pre-renewal mechanics it rests on a single stat — LUK. The chance formula is simple: CRIT% = LUK x 0.3 + 1.0. So the base is always 1% (even at LUK 0 you have a tiny chance), and each point of LUK adds 0.3%. Example: LUK 60 gives 60 x 0.3 + 1 = 19% crit chance on every hit.
Ignoring DEF
What makes crit special? First, a crit hit deals x1.4 damage. Second — and this is the big one — crit COMPLETELY IGNORES the enemy DEF, both kinds: hard DEF (percentage-based, cuts damage by a percent) and soft DEF (flat, subtracts a fixed number). That is exactly why crit is the best answer to tanks and high-defense mobs: a normal hit barely lands on such a target, but a crit strikes as if there were no defense at all.
Guaranteed to hit
Third, crit ALWAYS hits. It does not care about enemy FLEE or your hit% — if a crit rolls, the hit is guaranteed to land. This makes a crit build reliable against agile, evasive targets that normal attacks often miss.
Enemy crit-shield
But there is a catch — the crit-shield. Your real crit chance is computed as: Effective CRIT = your CRIT − target LUK x 0.2. The enemy luck reduces your crit. Against a normal mob with LUK 5 you only lose 1%, but some bosses and high-level monsters have large LUK and visibly cut your crit. Keep this in mind when planning a crit build for specific targets.
King of crit
The Assassin with a Katar stands apart. A Katar-type weapon DOUBLES your crit chance. That is why the Assassin is considered the king of crit: where other classes need mountains of LUK, a Katar Sin already crits reliably from almost every hit with only moderate luck. This is the foundation of the classic crit-Sin build.
CRIT% = LUK × 0.3 + 1.0- LUK
- LUK stat του χαρακτήρα
effective = CRIT − targetLUK × 0.2 (crit-shield)- targetLUK
- LUK στόχου (crit shield)
| CRIT | 60 × 0.3 + 1.0 | 19% |
| Με crit shield | 19 − 5 × 0.2 | 18% |
A character with LUK 60. Crit chance: 60 x 0.3 + 1 = 19%. We hit a mob with LUK 5 — the crit-shield removes 5 x 0.2 = 1%. Effective crit = 19 − 1 = 18%. So roughly every fifth hit is a crit: x1.4 damage and full ignore of the mob DEF.
Maximum LUK 99 gives 99 x 0.3 + 1 = 30.7% base crit. Nearly a third of your hits are crits even without a bonus weapon. Against normal mobs (low LUK) the crit-shield is barely felt, so the real chance stays around 30%.
An Assassin with LUK 50 has a base crit of 50 x 0.3 + 1 = 16%. But the Katar DOUBLES the chance: 16 x 2 = 32%. With that luck every third hit is a guaranteed crit that ignores DEF. This is exactly why a crit-Sin tears through tanks and high-DEF targets.
- LUK reference points (without a weapon multiplier): LUK 33 — about 11% crit; LUK 50 — 16%; LUK 60 — 19%; LUK 80 — 25%; LUK 99 — 30.7% (ceiling). With a Katar all these numbers are multiplied by 2: LUK 50 with Katar = 32%, LUK 80 with Katar = 50%. Remember the crit-shield: subtract target LUK x 0.2 from your effective crit — against normal mobs that is 1-2%, against LUK-heavy bosses it can be 5-10% or more.
- Common beginner mistakes. (1) Building crit on a class other than Assassin/Katar and being surprised by the low chance — without a weapon multiplier crit grows slowly. (2) Forgetting the crit-shield and not understanding why you crit a boss less often than normal mobs. (3) Stacking hit/FLEE for a crit build — crit always lands anyway, those stats are wasted here. (4) Thinking crit is boosted by DEF-piercing cards — crit already ignores all DEF, such bonuses do not stack with it. (5) Taking +DEF-ignore where you need +crit damage or +ATK: the x1.4 crit multiplier is better boosted with damage, not by duplicating the defense ignore.
Οι φόρμουλες επαληθεύτηκαν με τη μηχανή uAthena (pre-renewal, Episode 11.2).