No atributes value in output

I am trying to make template that prints all atributes values.

<xsl:template match="@*">
    <xsl:value-of select="."/>
</xsl:template>

<!-- override default template for text nodes -->
<xsl:template match="text()">
</xsl:template>

But the output is empty. Why?

Input

<hello name="Dominik">
 <help level="Hard"/>
</hello>

Expected output

DominikHard

Real output

EMPTY