L_Ender's Cataclysm FAQ

Craft or find the mod's guidebook, then locate your first structure such as the Sunken City or the Soul Blacksmith. Gather Black Steel gear before attempting any boss, since vanilla equipment is not enough.

Start with the Ender Guardian, then move to Ignis in the Soul Blacksmith, and save the Coralssus and other Sunken City encounters for after you have upgraded gear. Each boss drops materials used to progress toward the next.

Black Steel is obtained by processing materials found in mod structures, not from vanilla ores. You will need to smelt or craft ingots into gear at the appropriate station before higher-tier fights.

Each altar accepts specific offerings to trigger events or summon bosses tied to that element. Place the correct item on the altar and activate it, and make sure you are prepared before triggering, since fights start immediately.

Ignis is summoned inside the Soul Blacksmith by interacting with the altar there using the correct offering. Bring fire-resistant gear and a way to handle his flame attacks before triggering the fight.

The Ender Guardian is found in its own dedicated structure, reached by following the mod's progression from earlier bosses. Defeating it unlocks access to later content and drops.

The Ancient Spear is obtained from mod structures and boss loot rather than a vanilla recipe. It is a strong early boss weapon and pairs well with Black Steel armor.

The Sunken City generates as an ocean structure and is best explored with water breathing and a strong weapon. The Coralssus and other aquatic mobs there hit hard, so bring potions and backup gear.

Cataclysm mobs deal far more damage than vanilla ones and often have ranged or area attacks. Wear full Black Steel or better, use shields, and fight in open areas so you can dodge instead of getting cornered.

It generally works alongside most content mods, but structure and mob overhauls can conflict with mods that change world generation. Performance impact is mostly from boss fights and large structures, so allocate enough RAM and avoid loading many dungeons at once.