I particularly hate multiplayer trophies and also the collectables. I spend so much time collecting that i cant ever enjoy the game. And multiplayer trophies are hard to get during a rental period. What do you guys hate?

Uhh... Online Trophies I guess.

Trophies that make you do something that is counter intuitive. Like killing a boss without hitting its weak spot or something like that. 

Play. Create. Share. trophies! Getting hearted 80 times playing 150 other people's levels on LittleBigPlanet and earning 250,000 Create XP on ModNation, to most people, is downright rediculous!

Onlines trophies, those that require you to replay a game or finish a game in a difficulty that is not even available from the start, missable trophies due to missable quests.

"Beat the game on X difficulty" achievements that don't stack. If you beat the game on the hardest setting, it's incredibly stupid to have to play it again on all of the easier settings.

I hate multi player achievements and the ones where you have to beat the game numerous times to get it right

Im looking at you fallout 3, I just beat the game as good but now I have to go back to get the neutral and bad

achievements which will take 2 more gameplays >_>

I like those, they are more interesting than collection ones

Basically; anything which realistically requires me to follow a guide, which just kills the pacing of the game. Collection achievements can be forgiven if they tell you where they are roughly (like in AC II), and online ACHIEVEMENTS (I am less bothered by online trophies) as I cannot get them unless I pay extra

That might have been a bad example. I'm thinking TF2, where you have to ubercharge a scout as a medic and get 3 kills. NO ONE WOULD EVER WASTE AN UBER ON A SCOUT. Do get this achievement you basically have to say "fuck it, I don't want to win."

  I hate collection trophies that require you to look up guides to find.  Most online trophies are generally a pain as well.  The one that stands out the most in my mind is Demolition Man.