I won't get into much details since this deck is based on the original Harrpsichord Doomsday deck published by @Isvan so if you want to learn how to play this go read his excellent description at http://netrunnerdb.com/en/decklist/24236/haarpsichord-doomsday.
I honestly love the deck and it is so much fun to play. You need some practice with it to do good though. There are problematic cards and matchups that you have to play around and improvise a lot to have a chance to win but it is doable.
There are a few changes to the original tho:
I took it to the Polish Nationals and had a blast with it winning 4 out of 6 games. One game was lost due to Noise stealing Hades Fragment first turn (3x install virus, run Archives Q_Q). The other also against Noise, but a very close game with me ultimately losing just one turn before being able to score the last agenda.
Overall it's a blast to play. I highly recommend it.