Assassin Cross (SinX / AC)
Transcendent (3rd-tier) form of Assassin. Bridge from 2nd-job Assassin into the Guillotine Cross / Soul Blade Cross 4th-job line.
Position in tree
- Tier: Transcendent (3rd-job rebirth)
- Lineage:
Novice → Thief → Assassin → Assassin Cross - Advances to: Guillotine Cross → Soul Blade Cross
Role
- Critical-hit melee DPS specialist
- Strong burst windows via Sonic Blow / Soul Breaker
- Poison utility from Enchant Deadly Poison (EDP)
Stat priority
- AGI primary (ASPD + FLEE)
- STR secondary (ATK)
- DEX tertiary (HIT, cast time on Soul Breaker)
- VIT ≥ 90 once gear allows; survivability climbs in importance toward GX
Key skills (signature SinX additions)
| Skill | Effect |
|---|---|
| Enchant Deadly Poison (EDP) | Premier offensive buff — enhances most attacks and skills; widely cited as why the Assassin line is one of few classes effectively played with Ctrl-Click rather than skill spam |
| Soul Breaker | Ranged single-target burst (1320% ATK + INT × 70) — core PvP / MVP burst skill |
| Meteor Assault | AoE; scales with WATK, STR, base level |
| Sonic Acceleration | Buffs Sonic Blow: +100% damage, +30 HIT |
| Advanced Katar Research / Mastery | +30 ATK base; +20% ATK and +10% bonus damage with katar |
| Improve Flee | +30 FLEE, +5% FLEE Rate, +15% MS |
| Assassination Heart | Crit hits deal +60% damage |
| Twin Blade Penetration | Dagger DA bonus: chance to ignore enemy DEF / Pen up |
| Deepen Wound | 60% chance on crit / DA to remove 1 enemy buff |
Inherited Assassin / Thief skills
Hide, Cloaking, Sonic Blow, Grimtooth, Venom Dart, Venom Knife, Enchant Poison, Double Attack, Katar Mastery, Sonic Blow … see assassin.md and thief.md.
Builds
- Agi-Crit (Katar) — standard PvE / farm; doubled crit rate via katar mastery, crits ignore DEF + FLEE
- Sonic Blow / Soul Breaker burst — ~1M damage windows on high-HP targets via small-delay skill stacking and CDR cards
- EDP Ctrl-click katar — let auto-attacks under EDP carry damage; minimal skill spam
Recommended gear (carry-over to GX/SBC)
- Same as Guillotine Cross gear
- Earlier progression: Agent Katar +6 → Thanatos Katar [1]; Frenzy in a Bottle accessory
- Phreeoni Wings garment (set with Phreeoni card → +HIT, Perfect Hit) — strong PVM/MVP
Common pitfalls
- Skipping VIT entirely — works at SinX, hurts later at GX/SBC
- Not learning EDP rotation — major DPS loss vs other Assassin builds
See also
- Assassin, Thief — inherited kit
- Guillotine Cross, Soul Blade Cross — what comes next
- Class MOC
Backlinks
Sources / verification log
- 2026-05-02 — populated from web research: