So I started with TW made a portal, explored a bit and found Hydra boss arena. I went in saw a spawner and nothing happened, I was basically standing next to it, I even tryed to reset the block by placing things on it, nothing. I tryed 4 different arenas and non of them works and without killing Hydra you can't progress is TW. If it's intentional to stop players from using TW dimension I missed the information about it. Thank you in advance for your time and please excuse me poor english.