RISK
20 Achievements
8-10h
PS4
What We Have We Hold
Win a game having lost only 3 or fewer territories
5.1%
How to unlock the What We Have We Hold achievement in RISK - Definitive Guide
You can do this with 3 human players and only 1 controller. I found it very quick to do Capitals. Just place the other teams' capitals in a spot you can take on your first turn. Don't accidentally attack your territory from one of the other players. When your turn comes up, just take over both of the other capitals.