Since controls are not shown properly for Index controllers, hopefully this will save others the headache.

Upon starting the game, press B (on right hand controller) to open the Settings menu. Use <Trigger> to confirm menu selections.

Select Twin Stick locomotion as the primary control scheme (suggested by developers).

Assuming you are right-handed, set movement to Left controller (otherwise feel free to do the opposite). Forward movement and strafing will now be on left thumbstick (and touchpad) while turning will be on right thumbstick. Smooth turning is recommended if you're comfortable in VR.

Other controls:

• Teleport forward: Hold down (click) left thumbstick or touchpad.
  
• Switch between melee and ranged weapon: Press A on right hand controller, or apply force grip on left hand controller.
  
• Interact/Fire (e.g. with menu, weapon, object or inventory): Press trigger
  
• Grab and throw, shooting a bow: Hold and release trigger
  
• Use weapon special ability: Hold down (click) right thumbstick or touchpad to activate. Then, fire by pressing A on left hand controller, if applicable (many abilities do not require the second step).

I'll try to correct any mistakes as I mainly wrote this by memory. Hope it helps!