My 101 Lives in the Tower

What if one day you were to wake up in a tower full of monsters, demons, and objects of your worst fears? And to top it all off, you have a kinda big secret, the fact you can't die. You've been stabbed multiple times, thrown off a cliff, and torched by a fire spell by your not-so-friendly friend Jonah. This secret in a place full of people willing to basically anything to survive would mean dying hundreds more times, and it hurts a lot.