Empires & Allies – How do I level up the Omega Unit: Colossus in the game?

When your Omega Unit engages in a battle, it earns XP based on the damage done and received. It also gains XP for all successful defenses when it is on Defense mode.

Colossus can be upgraded to up to 15 Levels. You can level up your Omega unit faster using the 2X XP boost available in the Robotics Bay.

Screenshots of Colossus at different Levels:

Colossus gains XP in all victorious battles and in all successful defense of your base:

The image below shows XP gained when 2X XP boost is applied in the game.

_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-

Empires & Allies Game GUIDE