Okay, so I was playing Left 4 Dead yesterday or the day before, and I unlocked the "20 Car Pile-Up" Achievement from the "Crash Course" DLC. funny thing is, it unlocked while I was on the main menu screen...and I don't have the Crash Course DLC.
Has anyone else had achievements (or trophies, if you have ps3) unlock when they probably shouldn't've?
Yeah.. my fave one was in Just Cause on the 360... there are these cheevos for collecting items from across the game world, and there about 100 items and 15 achievements.
At one point I was driving very badly, and I managed to drive my massive truck off a cliff. When hit the ground, them game hiccuped and I went straight through it... as well as unlocking 12 achievements for 120 Gamerpoints at the same time.
Apparently I I need to do to get those cheevos was fall off the world.