Queen Thyra:

Once you've passed the fridged walls of the Snow Temple, you will find yourself on an icey platform where you will fight the dreaded Queen Thyra. She has taken Yeros prisoner within her icey clutches, and it is up to you to rescue him and defeat this frozen monstrosity once and for all.

As the battle begins, Queen Thyra will jab her two nail-like claws into the ground. While she is doing that, transform into Chilla, and it possible, fire his ice spear into one of her open eyes. If not, that's ok, because she'll turn around towards you, and that will give you more time. Shoot one of the open eyes on Queen Thyra, and once it pops, a large number of eyeballs were scatter across the field.

Queen Thyra will then jump onto a higher platform and shoot out spikey rocks that will land into the field. Watch out for them, as they can cause a large amount of damage. However, they do have some good use. Once they are on the ground, you can destroy them with 40 Belows wrecker move, and if you are low on health, heart pieces will be revealed from where the icey rocks once were.

Use 40 Below's wrecker move to knock the eyeballs off of the field. Once they are all gone, Queen Thyra will return with less eyeballs than before. Repeat the same process as before about three more times, and Thyra will then have no more eyes left. However, she will then jump to one end of the field and fire more spikey rocks. Avoid them as quickly as possible, and once she has stopped firing, quickly form into Chilla and shoot the giant eyeball in the middle of her head once it appears.

After the giant eye has fallen out, it will charge after you with spikes all over it. Avoid the eyeball until the spikes are gone, and then quickly form into 40 Below and use his wrecker move to knock the eyeball off of the edge. They eyeball will try to run back to Thyra's socket, so make sure you get it off the edge before it can get back into her socket. Once you have knocked the eyeball off of the platform's edge, Queen Thyra will be no more, Yeros will be rescued, and you will be rewarded with Snare. Now, there's only one more Shadow Troll to hunt down, and then the Wotnot book will finally be full.