Different Dimension Demons

D/D Lilth x2

D/D Dark Howling x2

D/D Cerberus x2

D/D Magical Astronomer Galilei x2

D/D Magical Astronomer Kepler x2

D/D Proud Orge x2

D/D/D Complete Obv Overlord Abyss Ragnarok x2

D/D/D CEO Hell Armageddon x2

D/D/D Leonidas

Covenant of Hellgate x3

Covenant of Swamp King x3

Mystical Space Typhoon x3

Dark Hole x1

One for One x1

Allure of Darkness x1

Covenant of Valkyria x2

D/D/D Resource Management x2

Lease Laundering x2

Solemn Warning x 1

Bottomless Traphole x1

Torrential Tribe x1

Extra
Temujin x3
Blackrose x1
Chaos King Archfiend x1
Overlord Alexander x2
Dark Highlander x1
Castel x1
Overlord Caesar x1
Dark Rebelion Xyz Dragon x1
Exciton Knight x1
Gagaga Cowboy x1
Honor Ark x1
Big Eye x1

I've been playing this deck for a while and it does okay against some decks, but I think I need to fine tune it a little more. Any suggestions?

Why Dark Hole? Use Raigeki and don't give up your field advantage!
Lease Laundering is not worth playing. Resource Management is good, but too slow.

Check out this article to take a deep look into the deck how to play them.