The Witcher 2.
The battle with the giant armoured battlefield demon thing. I think it was called a "Draugr".
Allow me to describe the event in dialogue form:
"Hey," says the game, "I'm going to put you up against a massive boss now."
"Sounds good", says I. "Let's go."
"But first I'm going to force you to swallow a great fat sticky wad of pointless preamble bullshit peppered with unskippable cutscenes that will ensure that any potions you took to prepare for the battle will have worn off and you won't be able to use any more."
"Hang on a sec, why would..."
"And I'm not going to give you a checkpoint before the big fight, because everyone knows that convenient checkpoints are for console tards. So if you die you will have to watch another unskippable cutscene and then repeat a fight with some trash minions while using a character that can't dodge, use items or cast spells. Then you'll have to mash the skip button to get through some dialogue. Then you'll have to fight a larger minion, then skip some more dialogue and then, at long last, you'll get to fight the boss... again."
"Well that's alright, I'll just use quicksave to..."
"Oh no you don't! Quicksave is for morons who need to have their hands held, so we're going to disable it throughout this stage. You will use my poorly placed checkpoints, and you will love them!"
"Fine, whatever, I don't really care anymore. I'm stubborn enough to put up with your shit. Just let me fight the guy."
"Oh hey, did we mention that he can call down volleys of arrows and catapult barrages?"
"Yes, I noticed. Now, could I just..."
"Also, he is immune to all potions, poisons and spells.
"I know, I read the..."
"Oh yeah, and he kills you in two hits, maybe three if you sacrifice a goat to the holy random number generator in the sky.""
"Noticed that too."
"And his attacks are unblockable."
"Yup."
"Lastly, don't forget that you won't have any potions for this fight. So you can't recover any health or boost your resistances or any..."
"No, no, no, no. That's it. Fuck you Witcher 2. Fuck your poorly written dialogue. Fuck your boring characters (except Ioverth, he's pretty cool.) Fuck your boring protagonist. Fuck your pandering sex appeal. Fuck your generic and boring setting. Fuck your convoluted mess of a plot. Fuck your buggy delayed-action controls. And extra special fuck your retarded checkpoint placement.
"Steady on, no need to resort to profanity..."
"You actually impressed me to begin with. I was willing to overlook your flaws. But I've had enough. Y'know what, I'm going to use this metric ton of ingredients I've been lugging around to craft enough overpowered grenades to fill my inventory. Then I'm going to bomb your miserable fucking boss fight into oblivion. Then I'm going to march invincibly through your entire fucking game burning all in my path."
And so I did. And I hated every second of it.