Gain the psychological high ground.
You can do this by playing audio that symbolically represents a physically smaller character being triumphant over a physically larger character. One good example of this is the song “Rules of Nature” from the video game Metal Gear Rising: Revengeance. This will work a lot better if you are using a sword in the game.
T-pose over that mf
Once you have defeated the boss, they are no match for you lol.
Become your own master now
Bear the mark of your scars.
Unmanned Gears be drippin’
You could actually put the real song from DOOM but ok