These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Visual Effects of Awesome: The animatronics and digital animation used to bring the crocodile to life are pretty kick ass at times.
Nintendo Hard: This could be a form of just sucking, but imagine walking into a room then immediately dying of hypothermia. This happening no where else in the game. True story.
Genius Bonus: Each game, all potions, rings, wands, and staves start out unidentified and being a random color/material. For example, a potion might be white, or yellow, or blue; a ring might be topaz or moonstone; a wand might be copper or titanium; a staff might be oak or avocado wood. In all four cases, one of the possible choices is a joke. One of the possible potion colors is plaid; one of the possible ring gemstones is kryptonite; one of the possible wand metals is mercury (try holding up a wand made out of a metal that's liquid at room temperature!); and one of the possible staff materials is fall (a "fall staff", get it?).
Good Bad Bugs: The PC version had some notable bugs that allowed a savvy player to cheat, as explained on the Roguelike page.