@dragonrider94 That's probably intentional. I presume they want you to blow up multiple ragdolls with a single bomb. Easy way to get that achievement is to rapidly fire 4 at one side, reset if all the bombs go off, and if they don't, fire another 3 at any remaining bombs.
@sidarian: The worst is something like "I woke up this morning and realized I wasn't strong enough to fight the monster".. Said something very close to that, don't remember exactly though.