The "right on schedule": So, you beat level 7 and you get an Achievement/Trophy. It's exactly what you expect right when you expect it. Awesome!
The "why didn't you warn me!?": So, you just killed 100 koopas. You didn't expect it (and eventually you were gonna do it anyway), but you get an Achievement/Trophy. Awesome!
The "I need a strategy guide": How in the hell was I supposed to know I'd get an Achievement/Trophy for falling into a manhole? Who came up with this? Oh, well. Awesome!
Achievements/Trophies are awesome, but which is MOST awesome?