What class are you?
Im a sorc healer and could maybe give you a few tips on each boss.
Hammer Station is really just cleansing at 5 stacks and healing through. Most people actually find the bonus frog boss more difficult.
Athiss for the final boss your group just needs to 1) avoid fire and 2) not stand in purple circles. The boss also has a big dot that (without looking) I feel hits for something like 10-15k. You can cleanse it, but I generally just heal through it. Important to keep players topped off so that this dot doesnt kill them.
Which server? I am a sorc in Ebon Hawk.