Some modders created "DP 25" as a hardcore difficulty patch that:
9/10 Best For: Fans of Hardcore Stealth, RTT strategy, and WWII history buffs. Avoid If: You dislike pixel-hunting or have a low tolerance for manual saving. commandos 2 dp 25
Is there any specific aspect you'd like me to expand on? Some modders created "DP 25" as a hardcore