Monster Train
53 Achievements
GOG
Penultimate
Reach Level 10 on The Umbra.
21.6%
How to unlock the Penultimate achievement in Monster Train - Definitive Guide
Qonok
TrueAchievements
TrueAchievements
The Umbra are unlocked when you have summoned 350 units with any other clan. Play through with them as your Primary or Secondary clan. Primary clan gets full experience for a run win or lose but the secondary clan gets only half the experience. You'll need around 245,000 experience to reach level 10.