Great slideshow. I'm also a huge fan of this article about common pitfalls in creating achievements: http://www.gamasutra.com/blogs/GregMcClanahan/20091202/370

Great slideshow. I'm also a huge fan of this article about common pitfalls in creating achievements: http://www.gamasutra.com/blogs/GregMcClanahan/20091202/3709/Achievement_Design_101.php http://www.gamasutra.com/blogs/GregMcClanahan/20091202/3709/.... In it, Kongregate's "achievements" guy gives 14 tropes that usually spell disaster. My favorite is "Pretend that the player dies if he reaches a point where an achievement is no longer earnable, and then evaluate how frustrating that experience would be and whether it makes any sense. Since death and reaching a point where an achievement is not earnable are essentially the same thing for a player who’s only playing something to earn an achievement, this can often serve as a useful check into how the player will react."