The Hand of Merlin
54 Achievements
GOG
Heroic Drive
Visit 50 Heroic Nodes.
1.4%
How to unlock the Heroic Drive achievement in The Hand of Merlin - Definitive Guide
You should earn this without too much trouble, each run just focus on hitting 1 or 2 of these in each area. Including the nodes within Jerusalem you should be able to get 6-8 of these per run. If you need to grind this a bit at the end, start a game in story mode and speedrun through hitting as many nodes as possible.