TMNT (NES) had the Shredder Battle. ugh.
Jackal (NES) last boss fight.
Super Thunder Blade (Genesis) 80% of the game was hard.
Adv. of Batman and Robin (SNES) dayum....
and this:
any game with an Escort Mission Level or Extreme Stealth Mission.
Shadow of Rome woulda been a great game to me but i couldn't beat the stealth mission in the training levels.

 

The escort missions in Virtual-On Marz. Oh God....

The last Sector-7 level in Transformers.

Stopping the North Korean tanks from destorying the Russian Mafia's HQ AND THEN still having to kill Sergi in Mercenaries 1.

Jurassic Park 3 Island Attack for the GBA. That whole fucking game was cheap with the kills and brutal. Finally beating it was a rewarding relief though.

Diddy Kong Racing's Silver Coin Challenges. I still cannot beat them all and thus cannot progress further through the game! *argh!*

 

Pfft. It's the secret bosses that suck.  

Also, Battletoads, stage 3, FFT: Rooftop with Rafa (RUN AWAY FROM THE ASSASSINS YOU MORON) and

 

Spiderman movie game #1 saving the Scorpion.

 

Do you one better,

Spiderman movie game #1-getting TO the Vulture.

 

True. I don't remember where I gave up in #2 and I didn't even bother with 3.

 

I forgot one the 2nd level in Halo 3 where you face like 12 Brutes by yourself at once I tried that on Legendary (or whichever is the hardest its ben since january since I played it lol)

needless to say I died a horrific death....many....many time

 

Area 8-3 (near the goal mark) in Adventure Island.

 

Goldeneye....

The level where you have to protect Natalya while she re programs the sattelite...

I HATED that so much.

 

Right now there are about 10 levels between COD2, COD4, and COD:W@W that are kicking the shit outta me on Veteran level. Good god is it a lesson in futility. Like Pelieu you start with no ammo and have to run to the ammo drop. As soon as you start to get ammo, snipers start shooting. Two -three hits and you are dead.

Other times I get hit and duck down to heal up for a sec and then 3-5 grenades are tossed next to me. I run, I get shot and die. I stay I get blown up. Repeat over and over and over. I feel like Sysiffus trying to roll the rock up the hill time and time again.

 

I was thinking about that one also. The Control Room. Took me months to do.

 

Never played 3. 2 was a breeze for me and great fun, but the final fight with Doc Ock was a button mashing nightmare. Maybe I was doing something wrong?

 

Borgan and Lunn in Lunar:Eternal blue for the Sega CD.


Escort missions.


Trying to find the god damn sailors in Shenmue .


Phoning home while eating Reece's Pieces.

 

Prince of Persia- Sands of Time: Protecting the chick while fighting your Father and a shitload of Guards. Eff that game to hell.

Sonic Adventure 2: Having to find three Chaos Emeralds in five minutes as Rogue. LAME.

Sonic Unleashed: Eggmanland. The only Speed Level in the game that's annoying as sin with multiple optical illusions and cheap turns. Trying to S-Rank that P.O.S. is awful.

Star Wars- Bounty Hunter: Any Level. Difficult level designs with a plethora of traps and enemies. However, the game is all kinds of cool so it doesn't really matter anyway.

Super Mario World 2: The Six Golden Coins- Wario's Castle. I swear, there were parts of that level that had to be timed exactly in order to survive. By far the longest and hardest level in the game, and it doesn't help that all of the levels beforehand don't prepare you at all for it. Plus, the three-part boss is fat and annoying.

Metroid Prime 1, 2, 3: A bunch of levels. Actually, no... many, if not all, of the boss battles. Some involve simply staying alive, some involve using your own brains to figure out what to do. One of the worst boss battles would have to be in 1 where you fight a your first mature... Phendrana Beast-thing. Meta-Ridley was a total bitch, too.

I got more, I just gotta think of them.

 

That was a piece of cake for me. It all has to do more with where you place Mario than timing. Anything that seems like timing is more of one continuous rate of movement or a rhythm which if done right can send to easily through each room of the castle. As far as the boss battle goes, ALWAYS pick or get the carrot. It will help you immensely. Especially when considering jumping on top of Wario is the only means to kill him.

I wish I could explain this easier but I love Super Mario World 2 because that and Super Mario 64 have been the only Mario games I've ever beaten.

 

YES. Escort/Protect missions should have a special spot in gaming hell alongside Timed Escape Sequences.

 

THIS!!! I could never beat it, but everyone I knew could...  

 

Opening up the Invincibility cheat on the Facility level of Goldeneye was one of the hardest things I've done. I even managed to do it for my friend as well. It was all a combination of knowing what to do and being lucky while you do it.