Halo: The Master Chief Collection - Halo 2 - Gate Your Thirst! - Halo 2A MP: Found and destroyed the BLAST soda can on Stonetown. This achievement is fairly easy to unlock.
On the map Stonetown, where ever you spawn run to the main building. Head to the back and jump over to the area with tarps on it.
The blast soda can is in between two crates.
Shoot it and your achievement should pop! Enjoy!