I was thinking that different games use different trophy models. Just as some examples:
1. The do-wacky stuff type of trophies: Getting rewarded for doing five consecutive flips with a car in GTAIV would fall here. As well as the kill three helghan in a row with headshots with the pistol in KZ2.
My verdict: I hate them
2. The grind and grind trophies: Getting 50 kills with a gun in U2. Or the 10,000 kills in Resistance 2!
My verdict: I like them, as long as they are reasonable
3. The story trophies: Complete a level - trophy. Seen this work in LBP and games like Terminator Salvation.
My verdict: My favourite!
4. The online trophies: KZ2 had quite a few, GTAIV had some tough ones to achieve. As well as most other games out there really.
My verdict: OK as long as reasonable.
5. The need-to-own-peripherals trophies: Grab a PS Eye for Buzz! Quiz World or any other additional purchase.
My verdict: Completely unbearable.
What's your take on this? And which model should games use to reward players with trophies or achievement points?