Tropico 5 - Penultimate Edition

I was using the nuclear submarine against captain plant and against invaders in a sandbox game and the achievement didn't unlocked. In the 360 Version of the game it was possible to unlock it this way, but now it's a pure multiplayer achievement.

Here is a small step by step guide:
1. Go to Multiplayer and create a match: modern era with unlimited money.
2. Invite your boosting partner, ready up and start the game.
3. Place a nuclear submarine. (press to open the build menu > waterdrops)
4. Import or mine uranium. (press + and pick uranium with a green arrow)
5. Wait until both of you have a nuclear submarine filled with uranium.
6. Now both players have to start an attack . (press + , go down to the other player and press attack)
7. Pick the submarine and confirm the "Press the button" option.
8. Boom. Achievement unlocked!