Boss Rush

*If you were looking for something other than this event, see Ultimate Boss Rush.*
 *"Hmm? Ah, another contender. Very well, may the ritual commence!"*

The **Boss Rush** is a special Epilogue event that is activated upon the use of Terminus. Although it can be summoned at any point in the game, it is recommended to be fought after all other bosses are defeated. During the event, every vanilla and Calamity boss (excluding the The Fabricational Quartet, XP-00 Hypnos, adult Eidolon Wyrm, Monstro, Queen Slime, Yharim Worm, Empress of Light, and Deerclops) spawns sequentially in a predetermined order. The bosses summoned have immensely buffed HP and damage and use modified Malice Mode AI, giving them all similar difficulties despite their usual distance in the game's progression. The Boss Rush can be deactivated at any time by using Terminus again. The event is punctuated with the unique Vision of the Tyrant boss fight, which utilizes various  curses to fight you.

Defeating the Boss Rush rewards the player with the Rock and Genesis.

## Progression

Upon starting the Boss Rush, bosses will spawn in a predetermined order that never changes. Only one boss will spawn at a time; the next boss will spawn once the prior boss is defeated. A total of 40 bosses will spawn during the Boss Rush. The bosses are divided into five Tiers, with each new Tier signified by a status message in the chat and a brief rest period.

If a boss cannot be summoned due to an improper time, the time will be changed to accomodate the boss.

Additionally, depending on what Community modifications the player has installed, additional bosses will be spawned as well.

The order is as follows:

## Boss Rush Curses

There are three curses that can be enabled through the configuration options. They are disabled by default. The curses impose restrictions on the player while the Boss Rush is active. They serve no purpose other than to challenge the player and offer no additional rewards.

* The Health curse negates all positive life regen.
* The Dash curse disables all dashes from items such as the Ornate Shield, Statis' Ninja Belt or Shield of Cthulhu.
* The Immunity curse prevents the player from getting hit more than once within the span of three seconds. If the player is hit more than once within a span of three seconds, they will instantly die.

With the Calamity: Community Remix addon enabled, the curses are instead activated by the Brimstone Witch. Upon defeating the event with a curse, the player is rewarded with varying amounts of Klepticoins  and a permanent buff depending on each curse. The Vision of the Tyrant will gain unique abilities based on activated curses in addition to its existing AI.

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## Notes

* Any effects that change the color of the background will be overridden by the custom background for the event. This includes those for day/night.
* Several bosses are sped up due to the potential speed of the player.
* Despite time being reset to the start of day/night for bosses that can only be fought at day/night, it is still possible to run out of time. In this case, the boss will despawn, time will reset back to day/night and boss will be resummoned with full health.
* All damage taken is increased (where applicable) to a minimum value that increases as the player progresses through the event:
	+ Contact damage has a minimum of 240 / **400** which increases by 2 for each boss.
	+ Projectile damage has a minimum of 220 / **360** which increases by 1 / **2** for each boss.
* King Slime can spawn Rainbow Slimes and Umbrella Slimes when damaged, even when it's not raining.
* The Eater of Worlds will be immune to all debuffs except Enraged, Kami Flu, and Shellfish Claps, and will take 99.9% less damage for ten seconds after being summoned.
* Golem's head will be immune to damage once detached from its body.
* Bosses that enrage outside their respective biomes, like The Hive Mind and Providence, do no longer be able to do so.
* Ceaseless Void currently does not spawn Dark Energies due to an oversight.
* Ravager's head does not spawn. It is unknown if this is an oversight.
* Despite the Boss Rush AI being based off of Malice Mode, Providence *does not* enter her nighttime form during the event. However, she can perform both the Crystal and the Holy Ray attacks regardless of the biome she was spawned in.
* Several of Supreme Calamitas' features during Boss Rush are unlike her usual fight.
	+ She will not vanish upon reaching 1% HP. Instead, the player will be prompted to finish her off after a delay.
	+ She will always appear in her hooded form, regardless of whether she has been defeated in the world or not.
	+ Her usual dialogues will not appear.
	+ The Brimstone Witch Town NPC will not despawn.
* Yharon does not spawn the flare bomb ring when defeated.
* Bosses slain during Boss Rush do *not* drop any items or currency.
* Providence and the Wall of Flesh do not create Profaned Rock and Demonite/Crimtane brick squares when defeated.
* The waiting time between the prior boss's death and the next boss spawning is 1 second during Tiers 1 through 3, which is increased to 6 seconds during Tiers 4 and 5.
* All wire-activated mechanisms are disabled during a Boss Rush.
* Some of the bosses, such as Jungle Dragon, Yharon and Supreme Calamitas, are made easier in the Boss Rush compared to their usual fights.
* The health of the bosses during the event only scales up with 2 people in multiplayer.
* Defeating a boss that wasn't defeated prior to the Boss Rush will not bring that boss' aftermath and will not count that boss as being defeated outside of Boss Rush.
* Killing any creature during this event makes the Xeroc eye glow red for a brief moment.

## Tips

* Many health and buff potions, as well as mana for mages should be brought, as the Boss Rush can easily take over twenty minutes.
* Auric Tesla armor is a good choice as it provides a wide array of set bonuses and regenerative effects
* Despite being able to begin the Boss Rush at almost any point in the game, the player should definitely have end-game weapons and equipment before facing it if they hope to succeed.
* Contact damage with any of the bosses and their projectiles/minions should be avoided as they can easily deal over 200 damage even with endgame armor.
* Players should attempt to distance themselves from any floors or other solid tiles after defeating Providence, in order to maximize the amount of space available to them once Supreme Calamitas spawns and her arena generates.

## Trivia

* The boss progression was based on a series of polls that took place in the Calamity Mod Discord server, gauging players' favorite bosses and the ones they found the most difficult, with the resulting total being used to determine the rush's order.
* The Boss Rush Curses were inspired by the Pantheon Bindings from the game *Hollow Knight*. These Bindings, activated during the boss rush mode in said game, hindered the player character in various ways.
* The bosses  The Entropic God, Noxus,  Exodygen, and  Abyssal Jewel are all absent from the boss rush, even if their respective addons are installed. This is due to them generally being considered post-boss rush content.

## Messages

* "Hm? Ah, another contender. Very well, may the ritual commence!" (when started)
* "Hm? Oh, you're still alive. Unexpected, but don't get complacent just yet." (before entering Tier 2)
* "Hm? Persistent aren't you? Perhaps you have some hope of prosperity, unlike past challengers." (before entering Tier 3)
* "Hm? Your perseverance is truly a trait to behold. You've come further than even the demigods in a short time." (before entering Tier 4)
* "May your skills remain sharp for the last challenges." (upon entering Tier 4)
* "Hm? So you've made it to the final tier, a remarkable feat enviable by even the mightiest of the gods." (before entering Tier 5)
* "Go forth and conquer 'til the ritual's end!" (upon entering Tier 5)
* "Hm? You expected a reward beyond this mere pebble? Patience, the true reward will come apparent in time..." (after completing the Boss Rush)