At the start of each round after the first, spawn one Ruined Machine at d. It is normal for two characters, elite each second spawning for three characters, or elite for four characters.
We just played the scenario, and XHA is not spawning the Ruined Machine every round. A look at Frosthaven.json suggests that the app is spawning every other round.
The special rules for Scenario 110 say,
We just played the scenario, and XHA is not spawning the Ruined Machine every round. A look at
Frosthaven.json
suggests that the app is spawning every other round.