Event Overview
Stage 1:
Collect reindeer in forested parts of map (south/east of the angel field)
Turn in to Mother Frost lady in the center of the angel (near entrance)

Stage 2:
Kill bandits in angel field (they wear blue maurader's outfits and hold snowflake staves)

Stage 3:
Kill Ice Queen (x:015, y:014) (a few paces south of Mother Frost lady, in the angel field)

How to kill Ice Queen
1. Kill Guards
-When they do Guardian Concentration, hit them with a lot of considerable damage. (You know how finishing blows do a LOT of damage because it has a % increase per mana? You don't have to have full mana to knock them out of concentration, but you have to hit hard to at least start making a dent.)

Yes, it'll take awhile. But focus on killing one guard at a time (don't spread your attacks, focus them on one at a time until one is down, and then on the other.
Just hit both guards hard when they start concentrating. When you knock them out of their concentration, it deals lotsa damage.

2. Kill Ice Queen
She's pretty straightforward.

I recommend having a tank+2 cannon build for this battle. It helps me because I can get through the battle without using any elixirs whatsoever, albeit it's slow. However, because their HP is pretty high, might as well make a team that hits hard and lasts long (your tank should be the only one worried in lasting, but if you're focused on giving it HP, it should be okay).

I believe spreading your attacks on the two guards results in killing them quicker.
Split up your mega attacks as well when they are concentrating.

Tank +2 cannon build? English please? Lol sorry have no clue what that means *stares at gibberish* I know tank is but everything after that x-x

I approach this the same way as Taptothebeat. When the guards are in concentration, I focus on both. I knock one out of concentration and then the other. This knocks their health down considerably. I then focus on one or the other or both between concentration. I try to keep them both near the same health, because then I'm able to kill them both between rounds at some point (I'll have to pay more attention to when next time).

I started going for both guards after my 3rd battle with the Queen. I didn't bother revising because I didn't think people would see the post (many just ask in the region chat and I figure they learn it there xD)

But Yeah, I'll admit it's better to go for both for the brief time that their concentration is up. Then I build mana by hitting tyrielle. c:

A glass cannon (it's terminology on other games so I figured it would fit xD) is a fighter whose stats are all focused in attacks, and end up having low defenses. Like a pet with high int or str.

Oh ok thank you :)

I have a question.. Well the pets I'm using on there are level 10 and when I fight the ice queen she is too do you recommend I switch them for my level 60 pets or no? I am not sure... ^-^"

I never tried lvl10s, mainly because I like the build of my lvl60 team. xD If you think you can kill her the same way you can with them, go ahead. But I believe that her difficulty is still 5star at any level, given that most players at first have a hard time.

I see. Okay. Thank you very much! ^-^