For this achievement you will need a minimum of 4000
points. Also, for this I highly recommend that you use the Elixir called Shields
up as it allows you to spawn a shield without having to build it (thanks to ihaze reaper for reminding me of the Shields up Elixir).
From spawn (near the Strife wall buy) you will want to make your way to the Amphitheater (Artifact Room)
to retrieve the artifact. Once you have done that make your way back to the Marketplace
and buy the door that leads to the Gymnasium Bathhouse
, go through the Gymnasium Bathhouse and you will be in the Intersection of Treasuries
Once in the Intersection of Treasuries you will need to look for the Golden Bridle
. It can either spawn on the small pillar on your left side
as you enter the Intersection of Treasuries, or it could spawn in the Stoa of the Anthenians
area on your right side
on a small pillar. Once you have picked the Golden Bridle up from one of those two locations, a Gegenees
will spawn near where you are.
Once the Gegenees has spawned use your Shields up Elixir and keep on using the harpoon attack against him. Since it will be a low round he will go down relatively quickly.
Overall this achievement is pretty easy to do I think.
If you are still struggling, feel free to use this as a reference.
Hope this helped, thanks.