Chaos Empire units:
Crawler-Fast, meele fighter, weak, strong in numbers. As singles crawlers are already a challenge. They cover ground fast making it difficult for archers to
do serious damage and attack consecutively. Fastest way to kill one is to have a Swordwrath and Archidon attacking.
Dead-Slow, range, moderate health. Like archers, the Dead unit uses range attacks to take care of enemies. Although they don't deal serious damage, units attacked
will suffer from poisen and may die. To cure poisen you can either get a Monk and teach it how to cure poisen wounded units or send the infected unit(s) to Garrison mode.
Best way to kill one is also with an Archidon and Swordwrath.
Skelektal Mage-
Medusa-
Bomber-Moderate damage, extremely short health. Suicidal warriors that run with a bomb in their hands. Damage all units within the blasting radius and are easily killed with
archers.
Eclipsor-Moderate damage/health, fast. Unlike the Order's Albowtross, this unit moves faster and causes less damage. Repel their attack by using Archidons and/or Albowtross.
JuggerKnight-Heavy damage, great health, Armored. Extremely difficult to kill. Best way to stop them is to use your own Armored unit(Speartons). When facing an opponent with one or more JuggerKnight, gold and mana will be really useful. Idealy you'd want two Spearton per JuggerKnight to be able to take the JuggerKnight's Charge.
Giant-
*Note: Unit's left blank I have not faced. The units with information are ones that I have observed.
My strategy for beating chaos is fairly simple. Begin by producing an Archidon and Swordwrath, send them to the center tower and get both miners to start mining. With the first 300g your miners
produce, create two more miners and also have them start mining. With the extra income from the tower produce another miner and set him to pray. Continue to do this until you have at least 2 miners praying and 8 mining. To make sure you have a strong army try to use only Archidons, Speartons, 2 Monks, 3 Albowtross, 1 Magikill, and that 1 Swordwrath from the beginning(if still alive).
Avoid building Ninjas and other Swordwraths since they die fast and try to have a bit more Speartons than Archidons but not by too many. Research the Giant's ability to grow bigger (as well as miner hustle) since they offer protection and distractions from your ther units but try to stick to only one though. Other areas to research should also be Fire Arrows, Shield Wall, Shield Bash, and Electric Wall.
Feel Free to post your own strategies.