The Golden Compass
16 Achievements
1,000
12-15h
Xbox 360
Fire King
Defeat the Flame Thrower Boss
30
How to unlock the Fire King achievement in The Golden Compass - Definitive Guide
Story related, just defeat him. As other bosses just run around them avoiding their attacks. This time you'll have to kill as many of the soldiers as you can so you're not overwhelmed later. At one point Lyra will call you to throw a snowball which will put out his flame thrower. Once done you'll get to slash him. Rinse and repeat 4-5 times.