A1: Tap triangle two times if on ps3(i not have on any other consoles sorry) it will be in ball form frozen for a few seconds try get axe and if it unfreezes tap triangle two times and freeze again

A2: The quick way to kill a fire drake is to destroy something with water in ti or to use the axe and chop it twice both these ways will destroy it

A3: If you are in the subway run for a vent so that as it comes in you cam hit it with an axe

A4: When its in ball mode shoot it in the head with the pistol