Why would anyone say Dark Souls? It has the powerful requirement, not the smart one. All you is walk up, back roll, repeat on every single enemy. Or just spam Soul Arrows which tears through everything the entire game before anything can touch you.
Megaman Zero series. The regular enemies themselves aren't that tough but, at least in 1 and 2, you basically have to memorize their placement in stages to clear them. The bosses are tough though, even once you have their patterns memorized the timing required is pretty unforgiving. I remember 3 and 4 being a lot easier but they definitely weren't cakewalks.
The Megaman ZX games are easier but the final boss rush in them might be the hardest among all the Megaman games since your supplies are so limited.
Every time I try to go where I really wanna be it's already where I am, 'cuz I'm already there XBL, PSN, Steam, Origin, BSN, GFAQs, MC: PhilOnDez
Deus Ex - hulking mechs and certain other enemies can present situational difficulties System Shock 2 - game is hard, full stop. Clive Barker's Undying - supernatural enemies can tear you a new one in secs Thief 2: Metal Age - you're a thief, which means an armed guard can easily give you a hiding Far Cry 1 - trigens
^ I'm an expert on all these, so for me they're easy, but their enemies will definitely challenge a new player.
Get some new material, that line is getting really old.
Not even close to what I said. And actually not a single person in this topic claimed any mentioned game was easy, except for you two Dark Souls derps getting offended before anyone even said anything. 10/10 for that