I have an idea for an achievement, but I can't use Photoshop worth a crap. Here's my idea.
Klobbering Time - Kill 50 People with the Klobb
If/when I think of more, I'll post them.
*EDIT*
Tanked! - Kill (insert number here) people with the tank.
Russian Roulette - Kill a person with your last Cougar Magnum bullet.
Body Mining - Kill 3 people with mines in 20 seconds