In order to get the Alien you need to capture the magic doll and the digger. Then when you have beaten a stage it will ask you if you want to capture bodies. You then click on yes. Then a screen will show up with different guys you can lure and you have to lure just the magic doll and the digger (nobody else) and it will say that you have a new invader, The Alien!
To get the neckalace you have to place a trap on the second floor over the neckalace and set it off. The neckalace then would fall to the floor!
Play track two of the game disc in an audio CD player.
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