1000-Hit Combo
When you first get the Flames of Ares, instead of clicking L3 and R3 like the game instructs, keep killing the enemies (they continuously respawn and you can easily earn red orbs in the process) by grappling them with R1 and slamming them with TRIANGLE. It's a bit time-consuming, but after awhile, you'll build up a crazy combo and even receive a trophy.