Reddit reviews Marvel Universe: The End

> Here is the "rematch" in against Eternity Here is the end result of that fight Here is the ultimate consequence of that fight Here is arguably one of Thanos' greatest accomplishments

"Marvel Universe: The End"



> Thanos did fight against the Beyonder/Kosmos/Maker, one of the most powerful entities in all Marvel. Although not at full power( pre-retcon beyonder was imaginably powerful), the Beyonder is nowadays a cosmic cube with awareness in a physical body.

"Thanos: Redemption"


> Thanos against Galactus

"Thanos: Redemption"


> Thanos vs. the Champion, one of the Elders of the Galaxy who is nearly invincible.

"The Thanos Quest", which is collected in "Silver Surfer: Rebirth of Thanos" and is the prelude to "Infinity Gauntlet"

I personally followed this suggested reading order: http://www.comicbookherald.com/marvel-cosmic-reading-order/

Before getting to the main Annihilation storyline, it suggests reading the following:

1. Annihilation Classic
   
2. Marvel Universe: The End
   
3. Thanos: Redemption
   
   I've read the first two of those three books and, while they were entertaining, they are not essential for understanding the Annihilation storyline.
   
   Although, Annihilation Classic is a fun look at the old-school origins of all of the major heroes involved in the storyline.