Knockback

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Knockback distance

Knockback will put a target into hit recovery and knock it back from the attacker. Targets can be knocked back a distance of up to three sub-tiles when unobstructed, but occasionally they will only be knocked back one or two (or even just put into hit recovery without moving). This distance cannot be increased. [1]

There is no penalty when applying knockback with a ranged attack, nor when applying it to Champion, (Super) Unique or boss monsters and their minions. Targets won't be knocked back if they are frozen or killed. The following targets can never be knocked back (monster types are described and displayed in the Arreat Summit's Monsters section): [2]

Blood Hawk Nest Griswold Gargoyle Trap Andariel Mummy Sarcophagus Fire Tower Sand Maggot Egg Coldworm the Burrower Lightning Spire Duriel Mephisto Trapped Soul Izual Window Diablo Bone Prison Catapult Suicide Minion Barricade Barricaded Door Barricaded Tower Prison Door Evil Demon Hut Nihlathak Talic Madawc Korlic Baal

Items

Knockback from items only applies to mêlée and ranged attacks. Equipping more than one item with Knockback has no effect. However, even if an attack is successful and does not get blocked, the chance of Knockback being applied varies depending on monster size, which depends on their type [3] (monster types are described and displayed in the Arreat Summit's Monsters section):

Knockback
100% (Small)	50%	25% (Large)
Fallen Spike Fiend Fallen Shaman Fetish Sand Maggot Young Swarm Vile Child Fetish Shaman Bone Fetish Demon Imp Pain Worm	Zombie Corrupt Rogue Corrupt Rogue Spearwoman Skeleton Corrupt Rogue Archer Blood Hawk Goatman Skeleton Archer Wraith Skeleton Mage Giant Spider Vampire Sand Raider Mummy Sabre Cat Radament Leaper Scarab Demon Vulture Demon Slinger Greater Mummy Bat Demon Claw Viper Baboon Demon Giant Mosquito Willowisp Zakarum Zealot Zakarum Priest Council Member Oblivion Knight Megademon Death Mauler Succubus Stygian Fury Reanimated Horde Festering Appendage Hell Bovine	Wendigo Blood Raven Tainted The Smith Flying Scimitar Sand Maggot Blunderbore Summoner Thorned Hulk Frog Demon Tentacle Beast 1 Vile Mother Finger Mage Regurgitator Hephasto the Armorer Overseer Baal's Minion Siege Beast Blood Lord Abominable Frozen Horror Putrid Defiler Venom Lord Minion of Destruction

¹ Tentacle Beasts can't move but are put into hit recovery when Knockback is applied.

Skills

Regardless of monster size, the following skills always apply 100% Knockback to each hit that isn't blocked: [4]

• Dragon Talon
• Dragon Tail (kick)
• Bash
• Leap Attack
• Summon Grizzly (BearSmite)

Molten Boulder always applies 50% Knockback unless blocked, but won't knock back Large monsters (instead, it explodes on impact). However, since Molten Boulder can hit the same target repeatedly, Knockback is applied consistently. [5]

The following skills always apply 100% Knockback: [6]

• Dragon Tail (explosion)
• Mind Blast
• Leap
• Smite
• Charge
• Sanctuary (undead only)

Dragon Tail's explosion won't be applied if the kick misses or is blocked by the monster, but if the kick hits and isn't blocked, then surrounding monsters can't block the explosion and will be knocked back. [7]

Telekinesis always applies 35% Knockback. [8]

Psychic Hammer always applies 100% Knockback to normal monsters and minions, but % Knockback applied to Champion, (Super) Unique and boss monsters (as well as players) depends on skill level: [9]

Champion and (Super) Unique Monsters

% Knockback = 50+[[(110*level)/(level+6)]*50/100]

Bosses and Players

% Knockback = 25+[[(110*level)/(level+6)]*74/100]

[ ] Round down

Level 1-59 Psychic Hammer thus applies 57-99% Knockback to Champion and (Super) Unique monsters, and 36-98% Knockback to bosses and players.

Sources

• Librarian, Get Off of my Cloud: Knockback - KB (FAQtoids)
• Nefarius, MonStats2.txt File Guide (v 1.0) (Phrozen Keep)
• Zealing with a Passion/Silence war pike.... (Technical Discussion)