1) that's easy you'll find it where you first fought spire.
2) goreas easy if you follow the steps below
3) Gorea changes colours depending on the weapon it's using.
Wait until gorea turns red. At that moment she will be vulnerable to the imperialist. Fire one shot at each arm. She will flip upside down. Stay far away and she will just sit there while you shoot her.
If your interested in beating gorea2 listen up. While you face gorea one you might notice colourful triangle thingies around the arena. shoot them in the following order with the appropriate weapon.
Yellow (VLT DRVR) Green (BTLHMR) Orange (MGML) Blue (SHK CL) Purple (JUD) Red (IMP) notice the alymbic prophecy states these colours in this order.
HOPE THIS HELPED!!
When you see the light at the end of the tunnel, the tunnel will collapse
More Bluntly... The light is a train
In English... Everything you work for will be taken from you
I am a pessimist...
It's better to be a pessimist, Because when the glass is half empty you get a refill!