In part 2 of the Hand of Corruption adventure the vile beasts who entered into a Compact to perform a vile ritual sacrifice that wrenched an entire planet off its course and then blasted it through the Screaming Vortex...
Seem to get royally hosed in part 3 of the adventure.
It has been sold for 90 pages or so, presumably several multi-hour gaming sessions, that this ritual will give the Black Crusaders access to their own planet. Until the module puts the troll face on, slams dunce caps on the player's heads and informs them that the planet has 100 million Necrons on it.
That's some mighty fine trollin.'

I'm looking at these Necrons and they are stone cold crazy. Then they pale in comparison to their leader and this thing called the C'Tarn Shard which looks like it is enough of a combat badass that it would give half a dozen Chosen Chaos Space Marines a real run for their money.
To spring that 100 million Necron trap on players, then make them enter combats which will almost assuredly kill some of them or cause them to burn most if not all of the Infamy they earned, seems unbearably cruel.
How would you run this module, if you take it to mean that the Black Crusaders have killed the leadership on the planet and are taking it over?
) if things go wrong… Followed by a rather interesting trip on a warp travelling planet without a gellar field just to add to the merriment. But even I don't want to throw Necrons on them right away.