Do a Barrel Roll!
There is achievement for new mount. I gained the red one but there are blue and green also. This achievement gave me 3 achievement points.
Orcsoberfest Welcome
To get this achievement you need to earn Festive Points in all games of event (Pork, Vomit, Boss, Orc, Sausage, Race, Drunk).
Traditionalist
Probably related to the outfit.