Easter Island Perfect/Imperfect statues

Guide

Step 1Play the Easter Island scenario in story mode.

Just before the 6th statue is erected, save the game (so you can load it and choose the other path later).

Step 2After the 6th statue is up, you will get this question:

Birdman Warrior

The priest propose to carry out the Birdman Warrior Event to find the strongest warrior of the tribe. The event has risks, but the those who survive will bring good things. Do you want to hold the event?

[Yes] [No]

Choosing [yes] will bring you down the Perfect Statue chain

Choosing [no] will bring you towards the Imperfect Staue

Step 3Complete the scenario by carving, transporting and erecting the 7th statue.

Source: https://steamcommunity.com/sharedfiles/filedetails/?id=2710184244					

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