Unholy Cathedral

Unholy Cathedral icon as seen on the menu

Unholy Cathedral is a challenging wave‑based gamemode in Soulstone Survivors. It is first released in the August 5, 2024 update (Update 12). The mode features four consecutive combat cycles, each with a unique pool of skills. Once a skill is used in a cycle, it's removed from subsequent selections until that cycle ends. The final cycle culminates in a fight against a powerful boss, Mh'thaeus, the Heretic, before the run concludes.

Gameplay

Unholy Cathedral takes place on the eponymous map, Unholy Cathedral. Players must survive a sequence of four escalating cycles, each featuring increasingly difficult enemies and altered skill selection mechanics.

The game starts just like any other gamemodes like Void Fields or Titan Hunt, players are tasked to kill enemies to level up and gain additional active skills. Once all tasks are done, the cycle finishes and players can progress to the next cycle.

Upon completing a cycle, players are granted a choice of an Unholy Power, a stat-boosting upgrade that increases character stats. Players are then presented with a limited pool of skills to choose from. Once a skill is selected during a given cycle, it becomes permanently locked out from future choices for the rest of the run. This forces players to adapt their builds dynamically, favoring versatility and foresight.

After the fourth and final cycle, players must face a powerful boss Mh'thaeus, the Heretic, unique to the gamemode. Defeating the Heretic completes the game. and grants rewards, including materials, soulstones, and rare upgrades. The mode resets daily, encouraging repeated plays with new strategic approaches.

Scaling mechanics

The Unholy Cathedral game mode presents players with three distinct difficulty levels to choose from: Ritual of Sin, Ritual of Hate, and Ritual of Heresy. After successfully completing all three of these initial rituals, the Ritual of Heresy difficulty gains an additional Endless mode. This allows its challenge to be progressively increased in increments of +1, pushing players against ever-stronger foes.

The specific stat bonuses applied to enemies within the Ritual of Heresy difficulty and its subsequent Endless tiers are detailed below:

Ritual of Heresy	Enemy Health	Enemy Damage	Enemy Attack Speed	Enemy Movement Speed	Lords of the Void Extra Health
+0	+80.0%	+20.0%	+20.0%	+20.0%	+700.0%
+1	+80.0%	+20.0%	+20.0%	+20.0%	+700.0%
+2	+100.0%	+30.0%	+30.0%	+30.0%	+800.0%

With each cycle interrupted, the enemy stats are also modified:

Bosses

Mh'thaeus the Heretic

Powers

Each cycle completed grants the player certain Unholy Powers. These powers only offer stat boosts and stay remained between cycles.

Icon	Name	Stats
	Touch of Evil	Damage Modifier: +26%
	Touch of Decadence	Movement Speed: +40%
	Touch of Perversion	Critical Damage: +60% Cast Frequency: -20% Area Modifier: +26%
	Touch of Corruption	Area Modifier: +26%
	Touch of Misery	Max Health: +76 Armor Power: +40 Movement Speed: -40%
	Touch of Viciousness	Max Health: -76 Damage Modifier: +26% Cast Frequency: +20%
	Touch of Depravity	Max Health: +76
	Touch of Wickedness	Block Power: +20
	Touch of Malevolence	Movement Speed: -20% Area Modifier: +39%
	Touch of Sinfulness	Cast Frequency: +20%
	Touch of Vulgarity	Damage Modifier: +39% Area Modifier: -13%
	Touch of Immorality	Max Health: -38 Critical Damage: +90%
	Touch of Wrath	Armor Power: -20 Cast Frequency: +30%

See also

• Void Fields
• Titan Hunt