The Time Keeper

The Assassin is the third and final Boss in Dead Cells. She was added in the Brutal update. The Assassin is found in the Clock Room which can be reached from The Clock Tower or The Forgotten Sepulchre.

On her first death, The Assassin will drop a Boss Source Cell and the blueprint for Ice Shock. Subsequent deaths will drop additional blueprints in the order given in the infobox (however, if the player misses a blueprint or takes it but fails to turn it in to the Collector, the blueprint will reappear until it is successfully turned in, preventing blueprints after it from appearing for the duration).

First Phase

 * The Assassins performs a melee atack with her swords
 * The Assassins throws three four-pointed shuriken forward
 * The Assassins throws a hook, like the Catcher's hook
 * The Assassins performs a forward dash
 * An explosion of four-pointed shurikens

Second Phase

 * Swords falls from the top of the room

Attacks

 * Understanding the attack pattern is the first step to beating The Assassin
 * All of her attacks can be roll-dodged, including the fallen swords
 * She can be frozen

Weapons/Items

 * As she can be frozen, you can use this and hit her with a massive damage weapon, like Cursed Sword or Heavy Crossbow
 * Phaser and Assassin's Dagger is a good way to cause massive damage to The Assassin
 * Also, Parrying most of Assassin's attacks is a good way to beat her, as seem in this video Shield build strategy