Superchief

The X quest was fantastic. Also, what makes it even more enjoyable is that X can be seen as a metaphor for the game's creator: They both took the entire series to complete something and they're both moving onto something new.

Looking back on the game my favorite moment was the end part of the Cotra quest (the unexpected betrayal and ensuing combat sequence), but my least favorite part was the Slith Spy quest.

Here's why: the problem, as you soon figure out, is the spy always runs away. So I thought the solution was obvious: use mind control on the basilisks he summons so that they'll freeze him and he can't escape. I mean, why else would basilisks appear on this specific quest? While they certainly freeze him, it's not possible to kill him (he gets down to a sliver of health and then can take an infinite amount of damage).

I thought from a game design standpoint that this is confusing. Why put monsters with a freezing ability in a quest where you are trying to stop someone from running? I can see someone argue that they're a red herring, but the fact that you can't actually kill the guy when he's frozen is lame. Also, the actual solution to the problem, which I later stumbled upon while exploring, was not very satisfying.