[hkkelvin1995]

Is it not possible to block suicide command like 'kill' and 'explode' anymore?
I have written a small plugin like the following:

public OnPluginStart() 
{
    AddCommandListener(Cmd_Kill, "kill");
    AddCommandListener(Cmd_Explode, "explode");
}

public Action Cmd_Kill(int client, const char[] command, int args)
{
    PrintToChatAll("You're not allowed to suicide");
    return Plugin_Handled;
}

public Action Cmd_Explode(int client, const char[] command, int args)
{
    PrintToChatAll("You're not allowed to suicide");
    return Plugin_Handled;
}

EDIT: Update or Remove old version of https://forums.alliedmods.net/showthread.php?p=2217736, then solved.