Assassin
2nd-job from the Thief tree. Specializes in critical hits and behind-the-back burst. Foundation skills here carry forward all the way to Soul Blade Cross.
Position in tree
- Tier: 2nd Job
- Lineage:
Novice → Thief → Assassin - Advances to: Assassin Cross (Transcendent)
Role
- Critical-strike melee DPS
- Strong stealth play (Hide / Cloaking) for opener positioning
- Dagger DPS via Double Attack OR Katar crit-stacking
Stat priority
- AGI — primary (ASPD + FLEE)
- DEX — secondary (HIT + ranged ATK)
- STR sparingly until later jobs
Skills introduced at Assassin tier (RO M verified)
| Skill | Lv | Effect |
|---|---|---|
| Sonic Blow | 15 | 700% ATK + 40% stun chance — signature burst |
| Grimtooth | 10 | 240% ATK AoE from Hide; 75% chance to remain hidden after cast |
| Venom Dart | 5 | 250% ATK ranged + applies poison |
| Virus Diffusion | 10 | 150% ATK; spreads existing poison to nearby enemies |
| Back Sliding | 10 | Roll back; +30 FLEE; enter Hide for 5s |
| Cloaking | — | Move while stealthed [VERIFY exact stats] |
| Katar Mastery (passive) | 10 | +30 ATK with katar weapons |
| Sonic Acceleration (passive) | 5 | Sonic Blow +100% damage; +30 HIT |
| Twin Blade Penetration (passive) | 15 | Dagger AA: 25% chance −50% enemy DEF; 10% chance +15% Pen |
| Enhanced Hiding (passive) | 10 | Skill effects persist 21s after exit Hide; +20% MS in Hide |
| Enhanced Enchant Poison (passive) | 10 | Poisoned weapon: +40 ATK; poison duration +10s |
[VERIFY tier — these other skills may also live at Assassin: Venom Knife, Strong Blade Attack, Ambush, Slash. Check in-game tooltip.]
Inherited from Thief (RO M verified)
Hiding, Double Attack (passive), Improve Flee (passive), Enchant Poison, Detoxify.
Don’t import classic RO skills: Steal, Envenom, Improve Dodge, Increase Dodge do NOT exist in RO M. Tier-of-introduction in ROM Handbook’s categorization is unreliable — rely on in-game tooltip for tier mapping.
Builds
- AGI-Crit Katar — auto-attack with katar (katars double crit rate)
- Sonic Blow burst — opener combo from Hide → Sonic Blow → …
- Dagger Double Attack — use Double Attack passive consistency
Path planning
- Pick this class only if committing to AGI-based DPS
- Skill priorities for advancing to Assassin Cross: max Hiding and Enchant Poison (gates EDP later)
See also
Backlinks
Sources / verification log
- 2026-05-02 — from 99porings Thief/Assassin/SinX guide and LDPlayer Assassin guide