Warhammer 40k - Iron Knights Short Story - Tower of Blood by Tony Ballantyne

THE STORY
One thousand floors has the tower, one thousand floors of blood, death and daemons. A squad of Iron Knights must fight their way to the top of the building to fight the mighty daemon that lurks there. Unless they can prevent its foul ritual, all the filth of Chaos will drown the world in corruption. Can even the courage and determination of a Space Marine commander triumph against such odds?

READ IT BECAUSE
One squad of Space Marines, one thousand floors of a tower overrun by daemons, and one massive twist at the end... It's a classic tale of determination and humanity's heroes fighting against the odds.