Here is the full list of all 11 Megaton: Total Destruction achievements.
Earn a Bronze Medal on ANY Level.
Earn a Silver Medal on ANY Level.
Earn a Gold Medal on ANY Level.
Earn a Platinum Medal on ANY Level.
Earn a Bronze Medal on ALL base-game Levels.
Earn a Silver Medal on ALL base-game Levels.
Earn a Gold Medal on ALL base-game Levels.
Earn a Platinum Medal on ALL base-game Levels.
You have lost so much money that no bank, loan shark, or investor in the world wants to loan you money.
Achieve a flight time of 2 minutes or more with the Homing Projectile.
Successfully found and detonated a nuclear device.