I was trying to make a plugin called "Combo King".
Description:
When you kill an enemy, plugin checks what weapons did you use against him. If weapon IDs are more than 1 (used multiple weapons in order to kill the enemy), it adds +1 to your Combo-Kill count. After x amount of combos (set by CVAR) it announces you as Combo King, and then the counting starts over again.
Well, I didn't succeed in writing the plugin, so maybe someone will correct/rewrite the parts that I writen wrong. Thanks.
EDIT: I've realized that I made many dumb mistakes here. Gonna try fixing it myself.