Chronos: Before the Ashes
40 Achievements
GOG
A True Adventurer
Complete the Game on ADVENTURE
8.3%
How to unlock the A True Adventurer achievement in Chronos: Before the Ashes - Definitive Guide
This is the "normal" difficulty option for the game, and stacks with Heroic if you choose to play on that difficulty. I would suggest playing on Heroic for your first playthrough despite its difficulty, as there is a lower difficulty you can choose for a secondary run to combine with Old Enough (15G).