The Elemental weapons and new items crafted using
Luminite Bars and Galactica Singularities are now attainable. Also, the Elephant Killer becomes available now, which is an all-class weapon that deals massive damage to organic targets.
Uelibloom Ore and Bloodstone are available at this point allowing you to craft Tarragon armor and more powerful weapons. Additionally, the Sentinels drop new gear and weapons.
Polterghast, The Old Duke, and mini-bosses found in the Abyss, several new weapons are now available.
Pre- Yharon (Phase 1)
The Devourer of Gods drops Cosmilite Bars on death, allowing you to craft the God Slayer armor set. His defeat also makes the Pumpkin Moon and the Frost Moon harder, and allows Pumpkings and Ice Queens to drop Nightmare Fuel and Endothermic Energy, respectively.
Pre- Yharon (Phase 2)
After Yharon reaches 10% of his HP he will flee leaving a
status message informing you of the now-buffed Solar Eclipse, in which enemies in the event will begin to drop Darksun Fragments.
Yharon causes Auric Ore to generate underground, allowing you to craft powerful weapons and armor.
Supreme Calamitas drops Calamitous Essence on death, which is required for crafting most developer items. These weapons will prove useful for the Boss Rush event. If you are playing with other mods that add even tougher bosses, these items will help greatly for them as well.