Harder, Better, Faster, Stronger

Upgrade a Unit.

Harder. Better. Faster. Stronger.

Requirements

None.

Strategy

To upgrade a unit, you need the right technology and enough gold to upgrade. The unit must also be in your territory.

Once the right technology is researched, the upgrade button will appear. This will replace the unit with a better, more modern one with the same experience and promotions.

Trivia

Pop Culture Reference

Harder, Better, Faster, Stronger is the name of a song by Daft Punk

Alternate Name

This achievement is referred as ACHIEVEMENT_UNIT_UPGRADE in the debug file.