i've started using this trick where you bait someone to follow you and if they do you do a quick 360 jump and knife them from behind, dealing 150 damage and killing them even if they were on full hp with heavy armor, like the spy stairstab from tf2, you cant react to it cuz it happens so fast, i still cant do it 100% of the time but its pretty fun and kinda op

https://reddit.com/link/100d9pa/video/ysv488pgfd9a1/player

https://reddit.com/link/100d9pa/video/1iyl2vhafd9a1/player