WebKit

What if you add a shop  with health/damage upgrades using kill streaks.
Like
"1.5x damage boost for 10 killstreak"

Sorry for not uploading for a long time, also credits to 

 for background music and coin trail effect

card-YKrM

A Combatintiation, Fight, Ultrakill game by @flawdze, playable free in your browser on Castle.