The new Protoss unit Colossus has a very artistic design,it’s legs are very long and it has ‘cliff- climb ability’.But it is weak against air vehicles also it is not very good at direct fire on battlefield.To enhance the strength and efficiency of this unit,players must use this unit indirectly and far from enemy fire.So at these conditions the Colossuses can be nightmares.But remember that you must be  a very good micro player to use this lethal robots.