Use the arrow keys to make Luigi walk. Use the SpaceBar to use your Poltergust, and use the mouse to aim it. Everything else seems self-explanatory, yeah.
If you find the secrets, you can actually unlock slam again! (enter a code at the title) you find the hints in game. 1st part of code: hidden in static. 2nd part of code:wall. 3rd part of code:boos "hair." 4th part of code:start button. code is 6 3 1 5.
