The hero of the game Forward rush is already at the start and behind him you will see two cylinders filled with water and a hose in his hands. Water is supplied under high pressure and thus the hero can clear his way and remove enemies who try to attack him. Shoot at the crates, choosing the lowest values for sure to destroy and get through. If you see rainbow boxes, try to break them, because bonuses are hidden in them that will give the hero various abilities: invulnerability, shooting like a machine gun or a fan, and so on. It is a pity that these skills are not permanent, they will disappear over time, but boxes of rainbow colors will come across in Forward rush.
