The Darksteel Mod

-Added unfinished Deathly Woods biome, with all it brings
-Revamped the Ruins and added many features to it
-Added Pastime Facility mini-dungeon (only available through command /give @p spawn_pf)
-Added Darksteel Brute and Giant Brillfly mini-bosses
-Added Brute Force, Brillgem, and Brillaltar items/blocks as drops for minibosses
-Added Darksteel Warrior variant for the Darksteel Troops
-Dutents can now be tamed
-Added Spawnblocks for Wither, Elder Guardian, and the new mini-bosses
-Added Fragile Dungeon Curse
-Added Redstone Lock Blocks
-Vases now have storage and generated loot
-Added "Ambient" features that can be turned off with /toggleAmbience
-Revamped Lightsprayer and switched its ammo out
-Added more advancements
-Recipes are now given in-game
-Reorganized creative tabs (about time)
-Edited Darksteel Spearman model to fit animation error instead of just fixing the error.
-Ruins biome significantly less common
-Changed and fixed loot tables
-Improved various textures
-Other small changes and additions
-Many, many, MANY... bug fixes. Seriously, there are so. many. bug fixes.