I like them when they are games that actually reward getting them or actual take effort.
I like it in Dead Rising, you get stuff for a lot of the achievements, and in Battlefield Bad Company i2, killing someone by putting a drill in there head.
I don't really like it when it is just "You beat a level!" unless it is done as a joke like in Eat Lead the Return of Matt Hazard (Pausing the game for one, also you get like three different achievements AFTER you beat the boss, one for a reveal, one for watching the credits, and one for mastering the nonexistent multiplayer)
I like it in Dead Rising, you get stuff for a lot of the achievements, and in Battlefield Bad Company i2, killing someone by putting a drill in there head.
I don't really like it when it is just "You beat a level!" unless it is done as a joke like in Eat Lead the Return of Matt Hazard (Pausing the game for one, also you get like three different achievements AFTER you beat the boss, one for a reveal, one for watching the credits, and one for mastering the nonexistent multiplayer)