Boss Rush

Boss Rush Mode is an alternative game mode that is accessible in the starting area of the Prisoners' Quarters. In this mode the player can fight bosses back-to-back with items they receive throughout the trials, without travelling through the regular biomes. It has 4 stages, with only the first being unlocked at the start. Completing a stage will unlock the next one.

At the start of a rush, there is a choice between Brutality, Tactics and Survival in the form of three Stat-Stones. Choosing one will automatically give the player stats relevant for the chosen colour and supply the player with 3 choices of relevant builds at the start of the stage in the form of tubes. Once a colour is chosen, the play won't be able to change the colour during the run. Interacting with a second and third Stat-Stone will increase the stats of the player.

In every transition room:
 * Guillain: Players are able to choose mutations in every transition room during a stage.
 * Rerolling mutations in any stage after the first will cost gold.

After every boss in the 1st & 2nd Stage and after every two bosses in the 3rd & 4th stage:
 * Stat-Stone: Interacting with it gives the player more stats.
 * Item-Altar: A two-choice-altar (with a weapon and a skill) will appear at the beginning of the transition area.
 * If the previous boss has been slain flawlessly, then a legendary three-choice-altar (with one guaranteed weapon & skill) will appear instead.
 * A colourless three-choice-altar will appear at the beginning of a run, which can contain items that wouldn't normally scale with the chosen colour.
 * Blacksmith: Players are able to upgrade items or reroll their affixes.
 * Upgrading an item costs 800 gold.
 * Rerolling affixes costs 200 gold.
 * Shops: Two shops (weapon & skill) will provide the player with more gear.
 * Items cost 1750 gold.
 * Currently the player can acquire off-colour gear by buying items from the shops.

At the end of a run:
 * Legendary Forge: After the run has been completed, the player gets the choice to invest their Cells into the Legendary Forge.
 * Loot: A chest that contains rewards is located at the end of the last transition area, alongside the Mentor Knight NPC.

Items
Rewards are locked behind each stage.
 * (stage 1 victory on 0 BSC)
 * (stage 2 victory on 0 BSC)
 * (stage 3 victory on 0 BSC)


 * 8 Skins, 4 barbarian skins and 4 victorious beheaded skins.

The statue
A statue of the Beheaded, which has customizable parts. The statue itself is unlocked by beating the first stage at 0 BSC. New parts are locked behind Boss Rush victories. To unlock every statue reward, the player needs to clear every stage at least 6 times:
 * 0-2 BSC
 * 3-4 BSC
 * 5 BSC
 * Same difficulties but flawlessly

Stages
There are 4 different stages in Boss Rush, with each being harder than the previous. A 3 bosses and 5 bosses stage, without and with modifiers. The player will be fighting alternative versions of bosses with extra abilities in the stages with modifiers.
 * Stages 1:
 * 3 bosses back-to-back
 * One Tier 1, Tier 2 & Tier 3 boss
 * Stage 2:
 * 3 bosses back-to-back with modifiers
 * One Tier 1, Tier 2 & Tier 3 boss
 * Stage 3:
 * 5 bosses back-to-back
 * Two Tier 1, two Tier 2 & one Tier 3 boss
 * Stage 4:
 * 5 bosses back-to-back with modifiers
 * Two Tier 1, two Tier 2 & one Tier 3 boss

Bosses will be selected from these 3 tiers:
 * Tier 1:
 * The Concierge
 * Conjunctivius
 * Mama Tick
 * Tier 2:
 * Time Keeper
 * The Giant
 * The Scarecrow
 * Tier 3:
 * The Hand of the King
 * The Servants (final fight)
 * The Queen

The Concierge

 * Twins: A second Concierge is in the fight.
 * They don't scream or create a force shield upon changing phases.
 * They only have 3 phases
 * They don't use the Leap attack (stage 4 attack).
 * They don't gain attack speed on low HP (stage 5 & 6 mechanics).

Conjunctivius

 * She moves once instead of twice between attacks.
 * Spawns up to 3 Tentacles continuously.
 * She only has one Tentacle Phase:
 * Activates when she reaches 50% HP.
 * The player needs to fight 10(?) Tentacles.
 * She screams a total of 5 times:
 * 1st scream at 90% HP (Bullet Hell afterwards)
 * 2nd scream at 70% HP
 * 3rd scream at 50% HP (Tentacles afterwards)
 * 4th scream at 30% HP (Bullet Hell afterwards)
 * 5th scream at 10% HP

Mama Tick

 * New attack: Unique Scythe Stabs that move from:
 * Left to right
 * Right to left
 * Middle to edges
 * Edges to the middle

Time Keeper

 * Heals to full health after transitioning to her 3rd phase.
 * She skips her first phase on 1BC+.
 * General cooldown reduction on attacks and between attacks

The Giant

 * Has 4 hands instead of 2
 * Simultaneously attacks with two hands (double slam, slam-swipe, etc.).
 * Starts in phase 3.
 * Doesn't scream because of this.

The Scarecrow

 * Stomp:
 * Throws 4 Sickles instead of 2 per Stomp.
 * Seed Throw:
 * Throws 2 Sickles per Seed Throw.


 * Pitchfork Jab:
 * Can spawn a Yeeter with the first attack.

The Hand of the King

 * Has a different AI that forces more moves (Slash-Slam into Super Slam, 4 Charges, etc.).
 * Added a 2nd slam after Slash-Slam.
 * Starts in Phase 3, but has an enemy phase.
 * Spawns HPC enemies during phase change.

The Servants

 * Arena now has wall Spike & Ball Spike traps on the walls and ceiling.
 * They are more aggressive in Boss Rush.

The Queen

 * Normal attacks cause Reality Slashes with different angles:
 * Slash: Upwards angle
 * Stab: Horizontal
 * Lower-Stab: Downwards angle


 * Is invulnerable during her Reality Slashes.
 * Her 2nd Reality Slashes phase is faster.

Gear and Stats
A build can be selected at the start of a stage by choosing one of the three Stat-Stones. In the next room, three tubes with starting gear are provided. Each boss drops loot in the form of two items (one weapon and one skill) and some gold, the last boss will only drop cells.

Three items are disabled during Boss Rush:
 * Giant Killer
 * Spoiler Skill
 * Wish Mutation