• L button: aim without walking
• R button: charge weapon (after upgrading)
• D-pad: walk, aim up/down, hold up to interact or enter doors/ship
• A button: jump / confirm
• B button: fire weapon
• Start: Open pawsOS (map, inventory and other screens)
• Select: Switch between weapon modes (after upgrading)

Top secret: Hold Select for 2 seconds to warp back to your ship at any time.