My brother has been messing around with minecraft and has stuffed it.
as is evident only the clouds and mobs are visible, yet interaction animations work.
I have deleted the .minecraft folder and the launcher yet this still persists! Other texturepacks are the same (currently on default).
Is there anything else i can delete?
It's the AMD BETA 14.1 video drivers.
Remove them and go back to the 13.12 drivers
I'm very sorry, my googleing didn't even hint to this, just delete and start again.