Communists are the only ones to have modern revolutions which have successfully overthrown colonizers and ruling classes and immediately ushered in societies that materially improved the lives of the masses. Infant mortality rates down, life expectancy up, literacy rates up, access to food and medicine up, etc etc. You can deny history and statistics all day but no one else has turned an illiterate backwater where people live an average of 35 years into the most advanced societies on the planet except for communists. The only "roadmap" anarchists have is being hedonists until capitalism makes most of the earth unlivable, which will certainly bring a type of anarchism to the last survivors of the earth, but will unfortunately be the mad max kind

There have been many communist revolutions utilizing dialectical materialist analysis to manufacture an overthrow of the ruling class and build new societies.