Being surrounded by flying blades that cut off a piece of flesh off him with each second certainly caused the Forlorn Prince to fall into madness. Thanks to his outrage, Tristan had successfully made him lose another of his limbs.
Splat!!
Janus didn't have time to say anything or even scream in pain because Tristan had made a deep cut on his face that injured one of his eyes, destroying it. His Immortal Body's trait kept activating, healing and recovering the wounds he suffered. But, its rate of regeneration couldn't catch up to how fast Tristan injured his body.
At this point, Janus finally realized that he couldn't beat Tristan no matter what, and thus, his survival instinct kicked in as his mind fell into deep thought, trying to find a viable method to escape.
The first chance he got, Janus decided to fly and continue his previous escape plan.
But how could Tristan not expect this?