Infiltrate.

Assassin active mastery skill, unlocked at level 10.

Global · 19 Sept 2026

What it does

Moves behind a target within 10m and deals 239 damage with a 3000% chance to inflict Blind for 3000 after using [Dodge] or while flying. 100% chance to inflict Blind on NPC targets. 10 Stagger Gauge Damage

Text from the KR/TW client; Global numbers may differ.

Specialisations

3 slots

From level	Effect
8	Restores 300 Stamina on landing [Infiltrate]
8	+10m [Infiltrate] range
8	Breaks Protective Shields on landing [Infiltrate]
12	Adds [Dark Strike] Chain Skill
16	+20% [Infiltrate] Blind Chance

Point cost

21 points in total

Skill level	Points	Character level
1	0	10
2	1	10
3	1	13
4	1	16
5	2	19
6	2	22
7	2	25
8	4	28
9	4	31
10	4	34

More Assassin skills

All

Quick Slice Active · level 1 Savage Roar Active · level 1 Shadowstrike Active · level 1 Heightened Sixth Sense Passive · level 1 Dodge Active · level 1 Ambush Active · level 3 Heart Gore Active · level 4 Storm Rampage Active · level 5 Exploit Weakness Passive · level 6 Whirlwind Slice Active · level 7 Flash Slice Active · level 8 Apply Poison Passive · level 9

Data from the Global client build of 19 Sept 2026 ; skill descriptions come from the KR/TW client, so a number inside one can differ on the Global servers — the tables above are Global values . Snapshot taken 30 Sept 2026. AtreiaLegend is an unofficial fan site, not affiliated with or endorsed by NCSOFT. AION and all related content are trademarks of NCSOFT Corporation.