Create
49 Achievements
1,000
30-35h
Xbox 360
Explosive Nature
50 explosions set off
10
How to unlock the Explosive Nature achievement in Create - Definitive Guide
For anyone wishing to boost this, level 6 of the second world has a tank that automatically fires a rocket when the level starts. Just load up the level, press start and the tank will fire. I'm not sure if you have to wait for it to actually explode against the bus but I did just to be on the safe side. As soon as it does just press start twice and it'll start it again. Achievement unlocked in a couple of minutes.
Lots of challenges use explosions; this will be unlocked in the course of normal game play.
This will definitely come naturally as you progress through the game, likely around the Space world challenges as they feature quite a few mine-based puzzles.