Kuudra

Kuudra is a Boss in the Kuudra's Hollow, previously Kuudra's End. Kuudra Keys are used to open chests from the Kuudra fight.

The Kuudra fight only allows 2-4 players at a time, similarly to Dungeons. However, you gain much more Crimson Essence from paid chests as opposed to dungeon essences, and much less Crimson Essence from free chests as opposed to dungeon essences.

Appearance
The Kuudra is an enormous Magma Cube around 3 times bigger than the Magma Boss with 1 big eye in the middle. Its 4 tentacles are not directly attached to it and also protrude out of the lava nearby. The tentacles were the result of upside down Withers around the size of the Wither King. The Kuudra is pouring with lava and has 2 other Magma Cubes on its 2 front corners.

Tiers
Multiple Tiers of Kuudra can be fought, with each having different requirements and costs. Higher tiers increase the difficulty of the fight, but give better loot.

Currently, the Infernal tier is on the AHN. Completing a Kuudra Tier for the first time rewards the player with.

Boss Fight
After starting the Kuudra boss fight, will fish up Kuudra. The players have to mount Cannons placed along the edges of the center platform, and shoot at Kuudra and its Tentacles, while other enemies attack them. Different mobs will spawn on the platform, and will attack nearby players. Shooting the tentacles grows more and more difficult, as the players have to work as a team to kill the mobs spawning on the platform. However, shooting the tentacles will give the players, which can be used to buy different Cannon upgrades, which each have a special and unique effect.

If a player dies during the fight, they will become a Spectator, similarly to Dungeons, and can be revived by their teammates.

There are multiple attacks Kuudra can use, which can occur every 90 seconds:
 * (Up to Hot Tier): Whilst players were on the platform, attacking the tentacles, occasionally spawned. They would kill all players 35 seconds after they spawned unless they are defused. They spawned on each of the four small floating islands above the center platform, and also on the center platform. To defuse the bombs, players had to use a certain amount of  near them. The amount of  required to defuse the bomb was displayed above it. The players gained  after defusing all bombs.
 * (Hot tier only past, All Tiers now): Multiple Wandering Blazes spawn on (1st phase)/float to (2nd phase) the platform and begin to attack the players. They used to can only be damaged by the Cannons.
 * (Hot tier only past, All Tiers now): Ghasts with TNT blocks fly towards the platform and drop the TNT blocks, which used to cause the players to lose the fight, and now deal 100% of all players' health as . The Ghasts must be killed to prevent them from dropping the TNT. They could only be damaged by Bows (1st phase)/Cannons (2nd phase). The players used to gain after killing all Ghasts.

Orbs will sometimes spawn throughout the fight, and float towards the Tentacles or Kuudra. They give positive effects when shot with Cannons, but give negative effects if the reach Kuudra.

Mobs
Different mobs spawn on the platform at specific times whilst the players are fighting Kuudra. They start spawning randomly at (Basic tier) or  (Hot tier). They are flung up from the lava onto the platform.

Basic Tier
In the Basic Tier of Kuudra, the fight was completed after defeating all 4 Tentacles. Now, players must bring supply chests to the middle, build the Ballista and fuel the Ballista in order to damage Kuudra.

Hot Tier
In the Hot Tier of the Kuudra fight, once all 4 Tentacles were defeated, Kuudra would spawn, and revived all of its tentacles. The players had to defeat Kuudra and its Tentacles, which were revived after a certain amount of time after being killed. After defeating Kuudra and its tentacles, the fight was completed. Now the fight is as same as Basic Tier.

Burning Tier
Kuudra must be stunned to be damaged. To do that, players must use a Human Cannonball to fire themselves into Kuudra's Belly. Breaking a glass pod to 0% would stun Kuudra, allowing the team to damage it. Other part of the fight is as same as Basic Tier.

Fiery Tier
The fight is as same as the Burning Tier.

Infernal Tier (on AHN)
Mobs spawn very frequently during this fight. At wave 20 or higher, more than 25 Dropships can spawn in very quick sessions. Other part of the fight is as same as Burning Tier.

Reward Chests
If every player fighting Kuudra dies, the fight will end, and the players will get access to the Free Reward Chest. If Kuudra is defeated, the players will be able to access the Paid Reward Chest, requiring the Kuudra Key for the Tier of the boss fight to open. Equipment variants from Reward Chests are dependent on the boss fight tier. The level of Enchanted Books from Reward Chests is dependent on the Tier of the boss fight. Level I Enchanted Books can be obtained from the Basic Tier, Level II from the Hot Tier, Level III from the Burning Tier, Level IV from the Fiery Tier, and Level V from the Infernal Tier.

The free chest contains an Enchanted Book if the fight was completed, and an Attribute Shard if the fight was  completed.

Trivia

 * Kuudra's main body is actually two Magma Cubes facing the opposite direction of the central island.
 * Kuudra is the final Factions Questline, so after defeating it, the Questline has come to an end.