ISLANDERS
38 Achievements
4-5h
GOG
Investor
Lose a total of at least 100 points in one match.
5.7%
How to unlock the Investor achievement in ISLANDERS - Definitive Guide
The simplest way to do this is with the temple. The temple has a large base negative score of -75 and it is easy to get that even higher by placing it near things like woodcutters.