For those who wants to battle the dark portal...
Frozen Wastes creeps:
Mammoth: Has some resistant to bullets .. anti-tank and building
Magnautaur Warrior: Anti Infantry and tank
Magnautaur Destroyer: Anti Group
Frozespire Hawk: Light anti air
Frozespire Wyrm: Heavy anti air, can freeze
Frozen soul: Swarm, anti infantry, only vernerable to magic
Frost Balrog: Boss, very powerful
Dread Wastes Creeps
Salamander: Submerges under lava, can set buildigs on fire, anti building
Moaner: Tank, can be a meatshield effectively
Slag Elemental: Anti Infantry while anti tank if they hurl flaming boulders
Giant Firefly: Anti Air, very powerful
Lavabat: Sucide air unit
Lava Lord: Boss
Scorched Lands
Dustwalker: Elemental, can be affected only by magic, can fill any role except tank
Duststalker: Can be only hurt my magic, can dispatch infantry easily but have a hard time against armored units
Sand Scorpoid: Anti Tank unit, very resistant to bullets
Desert Sorpoid: Anti infantry and tank, can easily crush tanks with their claws
Giant Vulture: Anti air
Bronze Dragon: Anti air and armor
Desert Lord: Boss
Rainforest Creeps
Canopy Beast: Hulking beast, can rampage and quickly destroy land forces
Canopy Gargungutan: Stronger Canopy Beast
Entangler: Ground unit that entangles enemy units
Ent: Magic resistant hulking creature, can crush tanks easily by throwing them
Revenatis: Boss
Lake Tagiyah
Merthyal Lobster: Anti Infantry, resistant ti bullets
Merthyal Brute: Anti Infantry and tank, can be a meat shield, resistant to bullets
Magthron Juggernaut: Anti land, weak to air
Hydra: Anti armor, can melt away armor easily but also serves as a anti infantry unit
Stormscale: A Huge beast, anti air, can fly or land or submerge
Hydromanus: Boss