Используйте Tampermonkey для вставки флажков, управляющих автонажатием кнопок

function addDomElements () {
    var newNodes = $( `
      <div class = "mySpamCntrols foundation-radius fightContainer foundation-base-font">
        <input type = "checkbox" class = "smallerBox" id = "EsquerdaHitBox" data-trgtSelctr = "#fightButtonBerserk1">
        <label class = "checkboxlabel" for = "EsquerdaHitBox">Hit Left</label>
        <input type = "checkbox" class = "smallerBox" id = "MeioHitBox" data-trgtSelctr = "#fightButtonBerserk2">
        <label class = "checkboxlabel" for = "MeioHitBox">Hit Middle</label>
        <input type = "checkbox" class = "smallerBox" id = "DireitaHitkBox" data-trgtSelctr = "#fightButtonBerserk3">
        <label class = "checkboxlabel" for = "DireitaHitkBox">Hit Right</label>
      </div>
    ` );
    //-- Best to add a <style> node, but spam inline styles for now...
    newNodes.find ("input").attr ("style", "margin:1px !important;line-height:10px !important;");
    newNodes.find ("label").attr ("style", "margin-right: 20px;");

    newNodes.insertAfter($('.foundation-radius.fightContainer.foundation-base-font')[1] );

    //-- Activate checkboxes
    $(".mySpamCntrols").on ("change", "input[data-trgtSelctr]", processMyCheckBoxes);
}
addDomElements ();

function processMyCheckBoxes (zEvent) {
    var chkBox = zEvent.target;
    //-- If box is now checked, fire off an immediate click and start the timers
    if (chkBox.checked) {
        clickButtonByjQuerySelector (chkBox.dataset.trgtselctr);
        //chkBox.spamClckTmr   = setInterval (clickButtonByjQuerySelector, 30000, chkBox.dataset.trgtselctr);
        chkBox.spamClckTmr   = setInterval (clickButtonByjQuerySelector, 2222, chkBox.dataset.trgtselctr);
        chkBox.pageReloadTmr = setTimeout  (location.reload.bind (window.location), 300000);
    }
    //-- Else, if box is now not checked, cancel the timers
    else {
        clearInterval (chkBox.spamClckTmr);
        clearTimeout  (chkBox.pageReloadTmr);
    }
}

function clickButtonByjQuerySelector (jQuerySelector) {
    var targetNode = $(jQuerySelector)[0];
    if (targetNode) {
        console.info ("Clicking node: ", jQuerySelector);
        //-- Warning this my not always suffice.  See https://stackoverflow.com/q/15048223
        targetNode.click ();
    }
    else {
        console.warn (`Node [${jQuerySelector}] not found!`);
    }
}

/********************************************************************
******* Everything below this block, including the HTML and   *******
******* CSS blocks, is simulated target page.                 *******
******* It's NOT part of the userscript.                      *******
********************************************************************/
$("button").click (zEvent => {
    console.info (`Button ${zEvent.target.textContent} clicked.`);
} );

.mySpamCntrols {
    margin: 1em;
    border: 1px solid green;
    border-radius: 0.5ex;
    padding: 1ex 1em;
}

<script src = "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class = "foundation-radius fightContainer foundation-base-font">fight 1
    <button id = "fightButtonBerserk1">Berserk 1</button>
    <button id = "fightButtonBerserk2">Berserk 2</button>
    <button id = "fightButtonBerserk3">Berserk 3</button>
</div>
<div class = "foundation-radius fightContainer foundation-base-font">fight 2</div>