OnMinigameKill > Killer Client > VCE_modVariable > killstreak > add > 1OnMinigameDeath > (Dying) Client > VCE_modVariable > killstreak > set > 0OnMinigameKill > Killer Client > VCE_ifVariable > killstreak > == > (desired number of kills)OnVariableTrue > (do whatever you want here)
This would actually be more customizable than a script.