Crackdown
50 Achievements
1,250
49-61h
Agency Explosives Expert
Bomb your way to a 4-star Explosives rating
20
How to unlock the Agency Explosives Expert achievement in Crackdown - Definitive Guide
Explosives include rocket launchers, grenade launchers, and grenades.
If you are solely focusing on getting this achievement, I recommend the following method.
1. Equip Lobber, Firefly, and Grenades.
2. Use all of the above to kill gang members.
3. When you run out of ammo, reload at a supply point and start at #1. It might take a few hours, but you'll get there.
:) Good luck!
Every time you kill an enemy with an explosion, your explosives rating goes up. When you kill a civilian or police officer in the same way, it goes down. Explosions can be gained with rocket/grenade launchers, grenades/mines, or shooting explosive barrels or cars. The single best tool for this is the Firefly rocket launcher, which homes in on the target. The Firefly rocket launcher can be found in the Shai-Gen territory in the possession of gang members on the roofs of buildings.
An easy way to obtain the Firefly is to start a Co-Op game with a friend that has it, kill him, pick up the Firefly, and go to a supply point.
You will also get a small amount of Explosives rating by finding a hidden orb. (See "Orb Hunter")