Here, they show Alpharius a'vision' of the future and offer him a choice: side with Horus, slay the Emperor and save the Universe from Chaos, or side with the Emperor and watch Chaos consume everything.
They show Alpharius a'vision' of the future. This is here. They offer him a choice: side with Horus. This is here. They slay the Emperor. This is here. They save the Universe from Chaos. This is here. They save side with the Emperor. This is here. They watch. This is here. Chaos consume everything.