Sujet : have you seen this bug on your physical copy of ratchet and

so i was just surfing the web watching quake 3 rage videos in italian , after watching one that was just incredible i went to the video owner's channel and found this video : in the video he is saying that he is invincible and immortal 

i have never seen this and i want to know if anyone has in encountered this bug before and knows how to trigger it. 

(quake 3, more like : i break my keyboard in quake 3 seconds.)