guide: Astral Spirit: Leaps at you. not very dangerous. Umbral Eye: Tosses itself at you like a boomerang Stellar Blade: Dashes off the screen and back. Astral Floating Head: flies to random places Astral Deadino: Tries to dive bomb you Astral Star: gets a gun and shoots at you Gemstone tank: Shoots crystals at you Crystal Creature: jumps on the ground, makes a shockwave, and jumps back up Millennium Boo: disappears, then Reappears right behind you. Umbral Spirit: same as Astral spirit, but will leap at you twice Crystal eye: fires a Star that loops around the screen Space Jellyfish: same as Astral Deadino, but will try to dive bomb you three times instead of once.
MrCartoonNetwork360 Yes, the astral beast was made for hardmode.