RPG I: The Necromancer's Revenge

first, I'll restore HP from the spiders... then I'll cast Death Ray, and after that, I'll use the rope to get to the other side....

you moved to the other side, and suddenly, a spider the size of a dwarf fell on you from behind, clinging to your back and dealing -20 HP damage. What do you do?
-I didn't know I needed to buy a ticket, I just asked if it was necessary? And he (pointing to the guard) said that a ticket wasn't needed. Then pay now, 250 silver.