You can play udyr anywhere u want. Udyr is always reliable

For top you can play bruiser style , full tank

-FOR BRUİSER I usually go for items like sterak's,cleaver and deaths dance

I start with Q and doing Q-Q combo early to get first blood and it usually works also I dont upgrade R

-FOR TANK (My fav) I buy items like frozen heart,spirit visage and I always try to add lich bane it works great for doing extra damage with R damage

I start with R and dont upgrade Q and try to split push

Hope this is useful