this has been answered here:
https://www.tibiaqa.com/9955/what-is-the-best-way-to-hunt-ice-library
Basically the route is this:
https://imgur.com/a/qOcLng4
4-man you want 500+ with a MS that can UH well
5-man you can do 400+ imo
full ice imbue on everyone
def prey Squid Warden and Icecold Book
can remove prey when EK gets hands with glacier amulets and starts getting comfortable