Samurai Warriors 4-II - Challenge Mode | Chamber of Death

This Challenge Mode unlocks only after completing the other 3 Challenge Modes. You have 5 minutes to defeat as many enemies as possible. It's basically the Chamber of Trials again, but with more Smurf enemy officers. So I suppose that makes it a bit harder. Aaaand with that I've done literally everything in SW4-II. Time to shelf this game forever.