takewithfood Rewarding is the word I'd use. Hard but rewarding.
Also, you should be able to find videos of the fight with these two. They're commonly known as Mr. Gold and Mr. Silver. Their attacks do not disappoint.
Whip it good!
Spikey The Ballbuster attack works on Mr. Gold, but not Mr. Silver, because Mr. Silver lost his balls in the war.
KnowFuture Found a copy at the 2nd of 2 Game Stops in town, about 5 minutes before they closed.
About 45 minutes later I'd made it to this part.
God damn, I wished I'd listened to people about this game sooner.
RockBolt The game is very hard, but even I managed to beat it, so it is definitely doable. Its hard without feeling broken and cheap, which is rare