The setting custom victory callout and the end game device equivalent settings will only work if there are more than one players in the map, which doesn’t happen in solo maps.

Hello, did you find a solution to this?
Thanks for the heads up. What is your Island Settings device > Teams setting set to? Custom?
Its set to FFA
This should be changed. We need to be able to use the end game/round device with custom callouts when only one player is on the map.
We should be able to call the end game device with a guard’s agent and have it so the player loses.