Edit in JSFiddle

const ctx = document.getElementById("myChart");

const options = {
    scale: {
        // Hides the scale
    }
};

const data = {
    labels: ['Running', 'Swimming', 'Eating', 'Cycling'],
    datasets: [
    {
            data: [-10, -5, -3, -15],
            label: "two",
             borderColor: '#ffc63b'
            },
    {
            data: [10, 5, 3, 10],
            label: "three",
            borderColor: '#1d9a58'
            },
            {
        data: [18, 10, 4, 2],
        label: "one",
        borderColor: '#d8463c'
    },
]
}

const myRadarChart = new Chart(ctx, {
    data: data,
    type: 'radar',
    options: options
});

<canvas id="myChart" width="400" height="400"></canvas>

              

External resources loaded into this fiddle: