Campaign

Comet Crash features a campaign mode that can be played as a single player game or a co op game with friends.

There are four dificulties:

Beginner

Casual

Normal (Ranked)

Expert

Walkthroughs for Normal and Expert can be found in the walkthroughs section. The walkthrough for Normal should work for Beginner and Casual as well.

The Story
The story as quoted from CometCrash.com is: "your goal is to take control of four different comets that alien forces have sent to wreak havoc on your home planet. To save your planet, you'll have to capture and secure each comet. The alien civilization has advanced technologies that you gain access to as you defeat them."

The Comets
Here is a list of the comets:

Kreios

Hathor

Aether

Helios

Unlockables
The following are unlocked throughout the campaign for use in later levels:
 * Kreios 1: Tank
 * Kreios 2: Laser
 * Kreios 3: Gateways
 * Kreios 5: Hammers
 * Kreios 7: Kreios Resurgence
 * Hathor 8: Pulsar
 * Hathor 9: Theif
 * Hathor 10: Bomber
 * Hathor 14: Hathor Resurgence
 * Aether 15: Drone
 * Aether 16: Switches
 * Aether 19: Tropedoes
 * Aether 20: Carrier
 * Aether 21: Aether Resurgence
 * Helios 23: Waypoint
 * Helios 28: Helios Resurgence