I believe there is an error within that little tutorial, as it only brought me to a rather messed up hentai scene at the hidden reef. Could you please double-check for errors?
I was able to find the triple-edged sword in the 3rd room of the dungeon of the 2nd dragon, but I can't seem to find the Teaspoon of Anti-matter, unless you meant the whetstone found in the same room that can be used to sharpen it. But in spite of all of that, I can't level it up. I'm thinking it may be a glitch, but it may be something you took out of the game, but instead of completely deleting the red gemstones used to level up, you probably left the necessary items used to level it up somewhere on that island that is in the background of most cutscenes, but still....
Oh, and the game needs more bombs. If it weren't for that, it would be a five star rating. But without bombs, it can't be... BOMBASTIC. HA.... HAHAHAHAHA......
SPOILERS::: You see, the boss has a high resistance against stabbing and slashing, so sharpening the sword only made it worse. You need to find the hidden reef on the shore of the island, where the mad scientist lives. Slay him, use his hair to start a fire (you know, his rad scientist hair), and then kill the boss with the lit bombs! The hidden reef is located south-east of the Temple of the Troll. Hope this helped!
This game isn't working because it was removed from the website, OMGPOP. (speaking of which, none of iminlikewithyou's games on kongregate will be working by the end of August, just so you guys know)
Alright, since so many people in the comments have been complaining about how to beat the 3rd boss, I will finally explain to you guys. First, on the first level, make sure you go into the lava cave and look for the double-edged sword, and also find an appropriately sized diamond to sharpen it. Then, at the 1st boss, use the W, A, S, and D keys to type in the following code: WASDASDWASDASDWADDSAWSASAWWWSAS. If you do it fast enough, it will skip the entire 2nd and 3rd level, thus bringing you to the 3rd boss. If you didn't get to the 2nd level, that's where you get your sword stolen, so this time you will have a better weapon. Then defeat the boss like you would with any other boss. You're welcome.
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I am offended by your language. There is no tutorial, nor is this an actual ga~~~~*gun shot*