Keybinds

F2 : toggles the targeting reticle
0 ( zero ) : detaches/attaches the camera
U : The next time you pause in-game, only the logo will be shown, no buttons.
H : Toggle the HUD ( available v 0.9.1 upwards )

When the camera is detached, your primary gamepad control the camera in free movement mode.
Left stick moves, right stick turns, right shoulder pads move the camera up and down.

Hiding the HUD is done through the Settings Menu,