This game, reminiscent of Dig-Dug, contains an explorer in a snow-maze trying to defeat robot soldiers.  WASD moves the character, space fires up the flamethrower and power ups effect the efficiency of the attack.  I won't pretend to be a programmer, but I would love to do the graphics in true 16 bit style. I think with VR you can allow for "tilt based" gaming, though I think it's ideal for at least one controller button to be activated. 

So yeah, I think arcade style  could allow a lot of gameplay possibilities. I think 15 levels is a good starting amount, because more would be near impossible, and less would feel way too short. 

Would love for a programmer to find a way to bring this idea to life :)