Tactics for Dark Eldar armies

want to know how to beat all the other armies in the 41st millenium ?

click on a link below

Chaos Space Marines (not yet written)

Eldar (not yet written)

Orks (not yet written)

Imperial Guard (not yet written)

Tyranids (not yet written)

Necrons (not yet written)

Want to know the strengths and weaknesses of all of the units available ?

click on a link below

warrior squads(not yet written)

Reaver squads(not yet written)

Hellions(not yet written)

Scourges(not yet written)

Ravager(not yet written)