The Collector/5 BSC

The Collector is the final boss in Dead Cells. He was added in v1.2, aka the Rise of the Giant DLC. He can only be reached on 5 BSC difficulty in the Observatory.

First phase
During the first phase he has 3 main attacks:


 * Syringe lunge: the collector lunges at the player with his syringe. This attack can be rolled through or parried.
 * Syringe spin: the collector will jump onto his syringe and rapidly spin towards the player. This attack can also be rolled through or parried.
 * Ground smash: the collector will smash his syringe into the ground which will cause a shock wave on the entire floor forcing the player to jump. After this attack many bombs will call from the roof.

Mob phase 1
The player will be teleported to a room with three doors which will open and let three early game enemies loose. During this phase the collector will also throw bombs at the player from above. After killing all the mobs, the collector will teleport down and he will not attack and is open to hit.

Torcher room phases
During these phases the collector will use the same attacks in the first phase except for there is a giant spike ball going around the room. The number of spike balls increase as the phases go on.

Second Phase
In this phase the collector removes all of his old attacks for new ones:
 * Orb laser: the collector will fly above the player and will charge a laser from his orb and there will be a few particles just before the laser strikes this attack can only be rolled at the last moment to avoid.
 * Orb throw: the collector will raise his hands and charge up orbs that can be parried or rolled through.
 * Fire tornado: the collected will charge and leash out to tornadoes both left and right many times. These tornadoes can be rolled or parried through.

Mob phase 2
Same as mob phase 1 but two mid take enemies are spawned.

After this he will probably go into torcher phase.

Mob phase 3
Probably the last mob phase. Phase you will see. Note if you don't attack the collector and throw his potion out of his hand then there will be more and more mob phases in this mob phase one end game or late game enemy will spawn.

Final phase
The player will be teleported into a room with a giant telescope. Here the collector will take less damage and will use both phase 1 and phase 2 attacks. In here when he drinks the panacea the player must knock it out of his hand and drink it. This will immensely boost the player's damage and will refill their health flask.

Tactics
TBA

Lore
When the Beheaded reaches this biome, the Collector reveals his plans to create the panacea, a fabled cure to all diseases, using all the cells collected by the Beheaded, further implying his true identity as the Alchemist. He asks the Beheaded to deposit them in the Catalyst next to him. Although the Collector doesn't believe the legends passed down by the first Alchemists of the island, he attempts this experiment in a last-ditch effort to cure the Malaise and save the island as well as himself. It turns out the remedy works, but it drives him mad with power. Thus, the Collector tells the Beheaded to go back and gather more cells, which triggers the fight.

During the fight, which consists of a number of phases in different rooms, the Collector keeps healing by drinking the Panacea. Once the player has dealt enough damage to the boss and/or survived through all phases, the Collector teleports himself and the Beheaded in the last room. Then, he becomes vulnerable when he attempts to drink, and drops the Panacea when hit. The player can then pick up the Panacea, which fills their potion slot with a blue liquid. If the player drinks it, their attacks with main weapons become extremely powerful and quickly deplete the Collector's health, leading to his downfall. Finally, the Beheaded ends the Collector by stomping his face three times. It is at this moment that he realizes that the cure is effective, and that he doomed the island's fate by killing the only person able to recreate it. Despite this, the Beheaded doesn't really care, as he believes the Panacea has cured him from the Malaise and will allow him to finally die and thus leave the island... although his wishes are ultimately not granted.

If the player reaches the Hand of the King a second time with 5 BSC active, he can possess the King's glitched corpse by using the Homunculus Rune and thereby repossess his own body. Then, a special ending can be seen by beating the Collector again while wearing the King Outfit; this permanently unlocks the King Outfit. Furthermore, beating the Collector flawlessly will also reward the player with the White King Outfit.

Trivia

 * Due to a sprite bug, when The Beheaded kicks The Collector's corpse, the syringe somehow moves in sync.