These are not 100% I'm sure and I don't know them all but having gone from xbox controller to mouse and keyboard this seems to be default controls. Feel free to contribute if I'm wrong or if you know the ones I don't. 1. L2 button - RMB (right mouse button/right mouse click) 2. L1 button - Ctrl + scroll-wheel (item bar selection), push down scroll wheel (radial menu item selection) 3. Directional buttons - F1, F2, F3, F4 (for radial menus 1-4), scroll-wheel (for ammo selection) 4. Left stick - W, A, S, D 5. L3 button - Left Shift (run / sheath weapon) 6. Touch pad button - ??? maybe M (for map) 7. OPTIONS button - Esc 8. R2 button - LMB (when aiming slinger/bow?) 9. R1 button - Left shift (sheath) or Ctrl + scroll wheel (for item bar selection) 10. △ button - Mouse3 or mouse4 (dont know order) 11. □ button - E (use item) 12. ○ button - Mouse3 or mouse4 13. × button - Spacebar 14. Right stick - Move mouse 15. R3 button - ???