I got the Have a Nice Flashback, just keep talking to the dude, have Internet Awareness, then wake up, beat the Shadow, then go to computer, give 100 gems, click down arrow on computer.
HINT: To beat the Nightmare dude, jump on the left platform thingy. Then, stay on it and then wait for the things to come and hit him. Once they get hit. Go get the black gems which lowers his health, then get back on, repeat until he gets beaten.
 "Higher!"){kind=icon}
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 "SandStorm Racing"){kind=icon}
 "Platform Racing 2"){kind=icon}
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