Regarding the gun: it was there just to play with as a prop and as a demo there isn't supposed to be that many features to begin with but to adress the issues you were having, Theres a teleport function if you pull back on the right thumbstick. also the emeralds can be force grabbed if you angle your hand correctly.. And as for the settings menu, its on your left wrist in the rouge level, just poin and click the button and it will pop up in front of you.