This achievement will unlock after playing an Exhibition match (win or lose).
To make this achievement easier, load up an Exhibition game with these settings:
Arena/Map: Any
Team Size: 1v1
Bot Difficulty: No Bots
Mutator Settings: Max Goal = 1
Now you can pick any team you want (it will only be you) and simply make a goal which will end the match immediately and count towards a win.
This will also unlock these achievements:
Here's a visual reference as to how easy and fast it is to create and finish an Exhibition map for this achievement: