Monster-Game

In this project I am going to play around method in order to shuffling an array (The monsters).
For this I use:

/**
 * Randomly shuffle an array
 * https://stackoverflow.com/a/2450976/1293256
 * @param  {Array} array The array to shuffle
 * @return {String}      The first item in the shuffled array
 */
var shuffle = function (array) {

    var currentIndex = array.length;
    var temporaryValue, randomIndex;

    // While there remain elements to shuffle...
    while (0 !== currentIndex) {
        // Pick a remaining element...
        randomIndex = Math.floor(Math.random() * currentIndex);
        currentIndex -= 1;

        // And swap it with the current element.
        temporaryValue = array[currentIndex];
        array[currentIndex] = array[randomIndex];
        array[randomIndex] = temporaryValue;
    }

    return array;

};

Don't forget the accessibility and add the alt text to the images. I use the Element.closest() method to get the closest parent up the DOM tree.
I use the simple math (++) to help me in the win or lose function.