Guild Wars 2

1. Have at least 2 to 3 players, either ranged or melee, defend the yaks at the beginning of the first round while another 2, hammer for faster and wider attack, go around and gather materials.

2. Since the toys cannot jump, block their entrances with snow walls, preferably 3 walls at each entrance to completely block the small paths.

3. build catas behind the snow walls as their AOE still hits the toys even if it hits the walls.

4. Make sure most paths are blocked with snow, resupply your walls and catas when needed, pick up a candy cane and hammer away.

Edit:
Toxx: I find rifles to be great DPS tool against her, but that’s just me
Ventari and Dolls: Catas beside snow walls or rifle wielding players can effectively clear them out.

5. Utilize the time that Toxx is out. Toys aren’t spawning at this time, so just have one person lure her away and have everyone else upgrade and build.