Admin_HS ?

#include <amxmodx>
#include <fakemeta>
#include <hamsandwich>

public plugin_init()
{
    register_plugin ("Admin_HS","1.0","XZ")

    RegisterHam(Ham_TraceAttack, "player", "fw_TraceAttack")
}

public fw_TraceAttack(victim, attacker, Float:damage, Float:direction[3], tr, damage_type)
{
    if (get_user_flags(attacker) & ADMIN_LEVEL_A)
    {
        set_tr2(tr, TR_iHitgroup, HIT_HEAD)
        SetHamParamTraceResult(5, tr)
    }
}