Emulated Analog Stick + Mouse

RT or A for left click, and LT for right click. Start for Escape/Pause Menu. Right trackpad for mouse look. You can optionally hold down RB, LB, or RG for an alternative, slower mouse mode, if that feels better for manipulating objects. The stick is a WASD directional pad emulating an analog stick, because although the game can otherwise detect joystick input it just treats it like a dpad by default. No other buttons are needed. Note some items appear highlighted but aren't usable without another item.