In my game, you can perform melee kills using a sword. The sword instantly kills weaker enemies while regenerating the player's health. Upgrading the sword allows you to kill stronger enemies. Using a melee attack consumes the Vortex Catalyst effect on nearby enemies, dealing them damage. Additionally, the player's health is restored even more when Vortex Catalyst energy is consumed. The sword has a cooldown, which can be reduced by killing enemies with firearms. The cooldown reduction is even faster if the enemies killed are under the effect of the Vortex Catalyst.
Stay tuned for more updates and happy gaming!