Assassin Stealth Crit Build Guide: Tainted Grail: The Fall of Avalon
The entity:assassin-stealth is the burst king of The Fall of Avalon. You build around entity:perception and entity:dexterity, open from stealth with entity:wolfs-fang daggers, and stack sneak and crit multipliers until a single backstab erases most enemies before they ever turn around. Properly assembled, your sneak attacks climb toward roughly 3.5x damage. This guide covers the attribute split, the three skill lines that carry the build, the gear that pushes the multipliers, and how to actually open a fight.
Build: fd1d37a9b5e3Attributes
Perception and Dexterity, in that order of importance. Perception is the engine: every point adds plus 1% Critical Chance, plus 5% Critical Damage, and plus 8% Sneak Damage. That single attribute feeds both halves of the build, the crit half and the stealth half, so it earns the bulk of your early points.
Dexterity is the stealth and speed support. Each point lowers your Noise and Visibility by 3%, making you genuinely harder to detect, and adds plus 4% Attack Speed and plus 1% Ranged Damage. The noise reduction is what lets you walk into a crowd and pick targets apart instead of getting spotted on approach. Split your levels Perception-heavy with steady Dexterity behind it, and keep your armor under 20% weight so you stay Light: three Dashes for repositioning between kills and quiet movement to match the build.
The three skill lines
The assassin runs three Perception lines together: Stealth, Daggers, and Critical Hits.
From Stealth, the keystone is Assassin's Doctrine, which adds plus 50% Sneak Damage outright. Ambusher's Impact makes your sneak attacks stun, buying time for a follow-up, and Cheat Death turns a lethal hit into 5 seconds of Invisibility instead of a death, which is the closest the build has to a panic button.
From Daggers, Predator's Fangs adds plus 30% crit damage while you hold a dagger, and Dagger Proficiency, Razor's Edge, and Serpent's Swiftness round out dagger damage and speed. Daggers are mandatory here because the dagger skill tree is what lifts your backstab multiplier from the baseline 2x up to a maximum of 4x.
From Critical Hits, Go for the Eyes adds crit damage, Critical Cascade stacks plus 2% crit chance per consecutive hit up to plus 20%, and Extra Lucky and the rest of the line raise your base crit chance so that your non-sneak follow-ups land hard too. Critical Cascade rewards staying on a single target, so when an opener fails to one-shot a tougher enemy, your follow-up hits crit harder the longer you keep swinging. That is how the dagger build closes the gap it otherwise leaves against bosses.
Two early skills are worth taking ahead of the rest. From the Stealth line, Silent Hunter cuts your noise by another 20%, which compounds with Dexterity's noise reduction to let you operate inside groups that would otherwise spot you. From Daggers, get entity:dagger-proficiency ranked early so the backstab multiplier starts climbing toward its 4x ceiling as soon as possible, because that multiplier is the single largest number in the whole damage stack.
Stacking toward 3.5x sneak hits
The numbers compound rather than add cleanly, and that is the point. Start with the backstab multiplier (up to 4x from the dagger tree), layer entity:assassins-doctrine's plus 50% Sneak Damage, add the per-point Sneak Damage from Perception, then fold in your crit chance and crit damage so that the opening hit also crits. The result is sneak openers that reach roughly 3.5x damage and routinely one-shot anything that is not a boss. Every Perception point you spend pushes all of those layers at once, which is why the attribute does so much work.
Gear
The signature weapon is the Wolf's Fang daggers, paired with the Assassin's Set for the stealth and crit bonuses built into the armor. Stack damage and crit accessories on top: the Swordsman's Ring adds plus 25% damage, and the Perilous Orb and Colm's Finger Necklace push your critical numbers higher. Keep the whole loadout Light so you stay under 20% weight, quiet, and quick.
How to open
Crouch, close to backstab range using your low Noise and Visibility, and lead with a heavy sneak attack from behind. A hold attack while sneaking applies the sneak multiplier to every damage type on the hit, so the heavy backstab is your maximum-value opener, not the light one. Against grouped enemies, entity:ambushers-impact's stun gives you the window to retarget. If a fight goes sideways and you take a lethal hit, entity:cheat-death drops you into 5 seconds of Invisibility, which is enough to reset, reposition, and open again from stealth.
Played correctly the assassin barely fights. It executes. You delete the dangerous target first, melt the rest while they are still searching for you, and vanish the moment anything goes wrong. The trade is that a single missed opener or an early detection costs you the multipliers entirely, which is the discipline the build asks for. For how the assassin stacks against the rest of the roster, see the Best Builds hub; the Class and Build Tier List explains why it shares S tier with the mage.