What are the different custom scenarios for Age Of Empires 2?

I'm not familiar with Age of Empires 2 scenarios, but I found a list of scenarios with explanations which includes Path Blood at a blog called Gaming Lan.

It doesn't include Michi, but there's an explanation up at Urban Dictionary.

... a type of game map that uses impassable terrain (usually forest) to prevent players from rushing or coming into contact until the intervening terrain is cleared.

Path blood is a custom scenario, completely different from RM/Dm.

You have no villagers, or a town center, and instead you just fight with units out of a "spawn" They keep coming untill you lose your tower.

In a "Blood"

the basics are the more kills you get= the better units razings= rewards

and to win you have to kill everyone else's main tower