God Hand on "Hard" difficulty.
Normally in God Hand, the game adapts to how well you're playing. If you're dealing a lot of damage very quickly while not taking any yourself, the enemies will become more aggressive, will counter attack more often, and will use stronger attacks. If you're getting hammered, they'll stop attacking if they're not in your line of sight, will not counter, and will use weaker attacks. If you're playing as well as you possibly can, the difficulty changes to "DIE!" and standard enemies kill you in 2 or 3 hits, stronger enemies spawn than normal, and they're much more likely to counter you.
If you play on "Hard", it's always set to "DIE!".