Twice i have tried doing Hoplite Heresy (Win a match as Greeks without training Ranged Soldiers or Cavalry).
I was very careful with not going anything ranged nor mounted. Both times, it failed giving me the achievement.
(List the steps needed to reproduce the issue)
(Indicate if you were able to reproduce this, to help us identify frequency of the issue)
I played a 6 on 6 AI (single player) at Titan difficulty.
Used Zeus-Hermes-Apollo-Hera civs, and trained only Hoplite, Hypaspist, Myrmidon, Pegasus, Petrobolos, 4 heroes, Centaur, Manticore and Medusa and the Titan in the skirmish.
Don’t tell me the scout cavalry counted as a cavalry.