Radar label overlap (many items)

HTML

<script src="http://code.highcharts.com/highcharts.js"></script>
<script src="http://code.highcharts.com/highcharts-more.js"></script>
<div id="container" style="height: 600px"></div>

JavaScript

$(function () {
    $('#container').highcharts({

        chart: {
            polar: tru
        },
 
        xAxis: {   
            tickmarkPlacement: 'on',
            labels: {
                staggerLines: 1 
            },
            categories: [
      
'Comforts and soothes oneself',
'Gives me a feeling of tranquillity and rest',
                'To celebrate something special',
'To enjoy the company of others',
'To feel attractive',
'To feel different and special',
'To feel high spirited',
'To feel refreshed',
'To feel relaxed and calm',
'Toforget everyday worries',
'To give me pleasure',
'To have a proper mans drink',
'To have my usual drink',
'To help me feel energetic',
'To help me fit in with others',
'To improve my mood',
'To indulge myself',
'To let go / to get tipsy/drunk',
'To quench my thirst',
'To reward myself',
'To share the moments with friends',
'To show that I know about beer',
'To spend quality time with friends / family',
'To stand out from the crowd',
'To take a break',
'To take some time to myself',
'To try something new',

            ]
        },

        series: [{ pointPlacement: 'on',
            data: [29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4,122,122,122,122,122,122,122,122,122,122,122,122,122,122,122]
        }]

    });
});