[quote name='tayaf69']Simon's Quest was the hardest Castlevania to me, but to be honest, there were some parts of that game that didn't even seem possible (summon a tornado anyone?) without some sort of walkthrough.[/quote]
The one thing about Simon's Quest is that reading the manual proved to be highly important since you learned that not all of the townspeople are going to be helpful, let alone tell you the truth. Second of all, it let you know that the Holy Water could destroy false walls, which was absolutely necessary in order to find some pivotal items and townspeople with info. Lastly, by making you talk to all of the NPCs that you can find, the first run through was basically trial-and-error.
In the end you play through the game the first time and, if you're lucky, you just beat it in around 12 to 15 hours and get the worst ending. The only problem is that the game never really mentioned multiple endings so most people missed out on the fact that if they kept running through the game they could get a wholly satisfying ending eventually.
Hard as hell game, really, but I still love it for what it tried to do. Frustrating at parts, moderately frustrating, and filled with hidden areas and secrets. It was one of those old-school $40 purchases that was well worth the money since it really offered a lot of content and replayability, sort of like Legend of Zelda and Clash at Demonhead.