The Colossus attack mechanic has changed a number of times, how does it currently work?
[Dustin Browder] While this is still going through balance, the Colossus currently does 23 damage but attacks twice and has 6 range, which players have the option to upgrade later to 9. When the Colossus attacks a target, it does a horizontal spread of damage in relation to where the Colossus is facing. This type of area of effect attack is extremely effective at eliminating massed lower hit point units.