Cracking Open...Imperial Miners: Aztecs vs Weirdlings

About Imperial Miners: Aztecs vs Weirdlings, from BoardGameGeek:

The first expansion to Imperial Miners introduces two enthralling new factions – the Aztecs and the Weirdlings. Each faction brings unique gameplay elements and strategies, enriching the Imperial Miners universe. It is said that if you dig deep enough, far enough, you will eventually come out the other side. To test this, many Empires began to dig, so deep in fact that they discovered two new groups of people that had the same idea: the Aztecs, with great and mysterious stories of past eras, and the Weirdlings, who sought refuge in the depths of the earth and whose lives depend heavily on the phases of the moon. It's time to mine among new friends and discover new underground Empires! -description from the publisher