Garen shook out the armor-piercing shells from the gun as he leaned against the hospital's ruined wall on the first floor.
Everyone who had entered the building had already been killed. So, he acted in such a way that made it seem like he was on the verge of dying. He switched off the relay instrument from the Mini Mech. He laid at a side of the ruins while reducing his Mech's temperature with the Cold Radiation to the point where the body temperature was indistinguishable.
If his opponent primarily used heat to detect any signs of life, then they would not be able to detect him as long as he could blend in with the surrounding temperature.
He would have a chance to survive as long as the opponent intends to capture him alive.
Garen's highly intense spirit and continuous actions had made him extremely tired as he had exhausted a huge amount of spiritual energy.