Cold Itzler

Drag to select your units, command them with right click.
Double-clicking a unit will select all of that unit type.
Shift + right-click creates a pathing que.
Use the minimap to navigate the large map, or WASD.
Press Space to toggle camera-lock on, and Z to toggle it off.
Brown tiles are hotrock, you can harvest them with any unit by standing on the tile.
Shift+right-click with a building selected to set a waypoint for produced units.
You can create command groups from selected units with ctrl+number, and access them with that number later.
Press Escape to pause

As humans. hold B and click a tile to build a wall, hold x and click a wall to dismantle it.
Hold R and click a tile to build a gate, gates can open and closed for units to pass.
Hold C and click a tile to build a barracks. Click it to select it to make infantry and snipers using the UI on the right.
Hold E and click a tile to build a machine lab. Click it to select it to make scout drones and harvesters using the UI on the right.
Humans will freeze to death without wind barrier walls.
The wind speed may increase, making survival difficult.

As Cold Itzlerians. units can metamorphose into stronger units, this is controlled by clicking the button in the UI on the right.
Cold Itzlerians are immune to cold.

As the Hamartans, you must condition your air for breathing. 
Hold Q and click to build a spire to condition the air
Hold C and click for a soldier assembler
Hold E and clock for a scout assembler
Hold R and click for a 'high-caste' assembler where workers and invaders are made.

As the Librilbians; 
Hold C and click for a bulbplant, it can seed pollinators
Hold E and clock for a  podmother, it can create fighting units
The podmother can only be planted on soil (within range of the bulbplant).

As the Avesectians;  Hold B and click for a Eggmound, it will lay eggs.
Eggs can be hatched into any unit. 

As the Plaztilites your units are poor harvesters
Hold C and click to build a sporeball, it acts as a hub for your gathering slime pathways.
Hold Q and click/drag to create slime pathways to collect hotrock, slime can also create fighting units.
To collect hotrock, slime pathways must cover the pile, and connect orthagonally all the way to a sporeball, diagonally is not sufficient.

if you are playing on a controller:
It is right trigger to select/deselect units. 
It is left trigger to select/deselect buildings. 
It is x to direct units. 
Other bindings are written in the UI and are contextual.