I enjoyed the game a great deal, but not enough to do a third full play-through.

I did my first play-through on Veteran difficulty, and got most of the achievements done. So I figured on my second run I could complete "Roller of Dice" (Complete the game in Randomizer mode on any difficulty), "Tactical Genius" (Beat the game on Tactician difficulty or higher.), and "Master of Randomness" (Complete the game in Randomizer mode on Tactician difficulty.) in one go. But after beating the game, only "Roller of Dice" and "Master of Randomness" unlocked. It would have been nice to know that going in. I would have just done my first run on tactician.

Also, none of the other achievements I tried on my Tactician/Randomizer run would unlock either. I'm assuming they only work on non-Randomizer runs.