Пробуй
1.
Код
#include <sourcemod>
#include <sdktools>

public OnPluginStart()
{
       RegConsoleCmd("hostage", RCC_Hostage);
}

public Action:RCC_Hostage(client, args)
{
       new i = -1;

       if ((i = FindEntityByClassname(-1, "hostage_entity")) != -1)
       {
             ForcePlayerSuicide(i);
       }

       return Plugin_Handled;
}

2.
Код
#include <sourcemod>

public OnPluginStart()
{
         HookEvent("hostage_killed", Event_OnHostageKilled, EventHookMode_Pre);
}

public Action:Event_OnHostageKilled(Handle:event, const String:name[], bool:silent)
{
         if (!silent)
         {
               SetEventBroadcast(event, true);
         }
}

3. good