It seems that due a recent strange "security update" the .sol for the game was moved from the folder "pRotectoR-kONgRegate-1_0.swf" to the folder "Protector_Final_Secure.swf". If you want to get back your lost progress, just copy your .sol files to the new folder.
I do like the game, but I believe it's fine as it is - experience points and whatnot would just make it worse.. Multiplayer wouldn't be worth all the effort, too. Regardless, great game.
 "Villainous"){kind=icon}
 "Ultimate Assassin 3"){kind=icon}
 "Take Something Literally"){kind=icon}
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 "Protector"){kind=icon}
 "Mahjong"){kind=icon}
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 "GunBot"){kind=icon}
 "Coma"){kind=icon}
 "Hello Worlds!"){kind=icon}
 "Enough Plumbers"){kind=icon}
 "Async Racing"){kind=icon}
 "Can Your Pet?"){kind=icon}
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 "VVVVVV Demo"){kind=icon}
 "Elements"){kind=icon}
 "Balloon in a Wasteland"){kind=icon}