We are releasing the Orion Developer SDK - Release 1 early! This is a compilation of assets and references of Orion. Level Designers can get their hands on it and start messing around and making community Orion maps! We will be announcing a Level Design Competition shortly after the Public release of the game.
The Release 1 of the SDK includes a handful of level textures, world objects, vehicles, trees, our detail objects and foliage, as well as .vmf references to show how we went about and created things for our levels.
These references include:
A.) Capture the Flag demonstration ( entities and more ).
B.) Door functionality.
C.) Keypad functionality.
D.) Structure design.
You can read more about the SDK, and the mod in general, at their ModDB page, or you can download the SDK directly.