[Arkarr]

Here we go :
1) Grab multi1v1.inc from here (original sources) :
https://github.com/splewis/csgo-mult...ipting/include
and include it in your project.
2) Hook when a player die. And store the killer and loser in two variables. (let's call it ArenaWinner and ArenaLoose)
3) Then do a simple If case with this stock Multi1v1_GetOpponent , if it returns -1, abort (return Plugin_Continue or what ever.)
4) Otherwise, if the value wasn't -1 of the above stock, do Multi1v1_GetArenaNumber(ArenaWinner) and store it inside a variable called ArenaNumber
5) then, simple do Score[ArenaWinner] += ArenaNumber; and Score[ArenaLoose] -= ArenaNumber;
6) TADA! You did it, good job ! Make sure to release it !

I did this instructions and not code, since you didn't want to. And that's alright. If you got any troubles, then feel free to post message here, ill try to answer them.

Also, you can give splewis a hudge thanks for doing this include file. Wich saved you much houres of pain and suffer.

[Janek_Waleczny]

I just love you dude. Thanks for everything I will write you a PM if I have further questions.

BTW - credits will be given to both you and splewis

[Arkarr]

There we go ! The solution with little explication :

PHP Code:

#include <sourcemod>  
#include <sdktools> 
#include <cstrike> 
#include <multi1v1> //-----------> Point 1

int ScorePlayer[MAXPLAYERS+1];

public Plugin myinfo =  
{ 
    name = "Ranking Arena", 
    author = "Janek", 
    description = "Ranking na Arene. Credits:splewis, Arkarr", 
    version = "1.0", 
    url = "http://www.cs-serwer.pl/" 
} 

public OnPluginStart() 
{ 
    HookEvent("player_death", Event_OnPlayerDeath); //-----------> point 2 (hook event)
}  

//------------> point 2
public Action Event_OnPlayerDeath(Event event,const char[] name, bool dontBroadcast)
{
    int ArenaLooser = GetClientOfUserId(event.GetInt("userid"));
    int ArenaWinner = GetClientOfUserId(event.GetInt("attacker"));
    
    //------------> Point 3
    if(Multi1v1_GetOpponent(ArenaWinner) == -1) 
        return Plugin_Continue;
    
    // ------> point 4
    int ArenaNumber = Multi1v1_GetArenaNumber(ArenaWinner);

    
    ScorePlayer[ArenaWinner] += ArenaNumber;
    ScorePlayer[ArenaLooser] -= ArenaNumber;
    
    PrintToChatAll("[Arena Points] %N won and got +%i points ! (%i)", ArenaWinner, ArenaNumber, ScorePlayer[ArenaWinner]);
    PrintToChatAll("[Arena Points] %N lost and lost -%i points ! (%i)", ArenaWinner, ArenaNumber, ScorePlayer[ArenaLooser]);
    
    return Plugin_Continue;
}