Check out all that it includes here.

Or read here, then go and see the pics.
It includes:
• Halo Limited Edition
• Poster (Didact’s Cryptum)
• Halo paperback “Glasslands”
• Mega Bloks “Eva’s Last Stand”
• Mega Bloks Diecast Warthog

Here’s a pic of it all:

The pic is misleading though as it shows the Mega Bloks Spade set and Diecast Scorpion set in the container, but not loose. Also of note is the UNSC Infinity poster/lithograph.