Lord of the Rings: The Third Age is a 2004 RPG based on J.R.R. Tolkien’s world of Middle-Earth. In its hard mode, enemies are buffed with more health and resistance to damage. However, this change has an unexpected effect due to the game’s unique leveling system.
Unlike traditional games where experience points determine level progression, The Third Age uses a different approach. Leveling up is based on how often a character uses their abilities. With harder enemies, players have more opportunities to use skills, leading to rapid level progression and early party completion.
By the time players reach max level, they are significantly ahead of what would be possible on lower difficulties. The game’s hard mode speedrun allows for incredible progress, making it an attractive option for players seeking a challenge.
Source: https://whatculture.com/gaming/10-video-game-hard-modes-that-made-games-easier?page=3