I tasked myself with the hypothetical UI design for ODST 2, a sequel I and many others would love to see one day. I tried to keep the theme simple and sombre just like the original game made me feel back in 2009.
I pretty much made all of this using existing Halo assets but the skulls were based off the icons from Halo 5. Animated a full idle loop animation for Souta (Yes he has a name!) and even a rough outline for a story so I can justify cool names for the missions. I may have gone a bit overboard in that area.
ODST model was made using assets from Halo 5.
The mission preview images & backgrounds were from various halo titles.
Music used was Halo 3: ODST Overture by Martin O'donnel, and the UI sound effects from Halo 3.
Complete animation