A TShock Plugin that get bosses to enter its phase 2 immediately.
Grab the newest release and drop the .dll in tshock directory.
This plugin does not require any configuration, modded bosses will automatically enter phase 2 by itself.
Eye of Cthulhu
The Twins
Duke Fishron
Empress of Light
For other bosses, some don't have phase 2 and some have weird ai.