I hear ya.
There were like.....100 levels in that game. (In fact, I'm pretty sure it was 100 even)
All you got at the end was like...a big arcadish- screen that said game over.
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More boss shout outs:
The BLOB in the 100 level maze from Lufia 2. (Snes) The Blob himself wasn't that tough, but you need to consider you've gone through ONE HUNDRED BLASTED LEVELS of hell, and are low on health/items etc.
Dracula-Castlevania 1, and ONLY Castlevania 1 (Nes) If you killed his normal form, you got to fight the bloody demon thing he changes in to. The PSX Castlevania is a toughy as well, they did a good job keeping the psx difficulty on par with the original game....for the most part. They took out the Frankenstein boss fight...now he's just a brief cameo pansy.
The BRAIN from Contra III on hard, because you beat him once...then he turns into a big grey bastard who fights you with a shit load of tentacleknife thingies as you escape on the chopper.