Bug with "Puzzler" achievement has been fixed in:
12 Labours of Hercules II: The Cretan Bull
12 Labours of Hercules III: Girl Power
12 Labours of Hercules IV: Mother Nature (Platinum Edition)
12 Labours of Hercules V: Kids of Hellas (Platinum Edition)
12 Labours of Hercules VI: Race for Olympus