this is all semantics really... No matter how you look at it, not every trophy was "planed that well"
lost planet 2 required 500 tasks to get the plat, 1 of which was geetting #1 on a leaderboard...
fight night allowed 1 person to stop anyone else from getting the plat
their "Achievements" not "things you should be able to obtain without anything extra... This argument will get old but look though all the trophies... At some point theere will be a trophy/game which will require something you dont find fair...
lets look though some!
Spelunker: few people CURRENTLY play online, and you need 3 people to get 4 mural pieces, on 4 different area's. you can do this online or offline, but for offline you need 3 controllers, and the SKILL to get that far, or 3+ people onnline who want to help you...
A) this is BS because the online isnt active enough to make this easy.
B) this is BS because you need 3 controllers
Littlebigplanet: some prize bubbles require several people, but a lot of people have lag like myself so...
A) I need up to 3 friends and 3 controllers, and they need the FREE TIME to help me at once get eevery prize bubble
B) I need an internet connection fast enough to get it
Shank: There is no online, only offline... so you need 2 controllers and either TONS of effort to do it, or a friend to help you beat the game.
Lost planet 2: Requires split screen cycle complete, so either you get another friend to help you, or you give up grenades to make it easier... either or you got to play though the game with 2 controllers, adn a lot of effort.
Pachi Para 15: Next to no one plays, so you need to boost it with all of the few people who're still playing.
Killzone 2: you need to have enough free time to put forth into the online to come in the top 1% that week, and or boost enough to come in first.
Fret Nice: requires a guitar
Street fighter IV/Super Street Fighter IV/Blazblue CS: in a lot of cases you will need a special controller to pull off enough of the combos to plat, this isnt a need, but I dont think ive heard of a person pulling Street Fighter off without a fight stick or fight pad.
etc... but if you limit it to games that dont have online... sooner or later every online game will go offline so why not hack them all? then hack every game that just uses time? honestly letting 1 thing go as acceptable will just lead to it being acceptable so its really all or nothing
reguardless, usually if the game had online and trophies... the game was DEAD online, long before you got the game...