Steam achievements not unlocking

[bennybjc]

Hi,

I am playing Lego Hobbit (movie 2) and the Steam Achievements are not unlocking. The levels have been completed, the game has been saved and reloaded but the achievments stay locked.

The last achievement that I unlocked was:
* What do you need?
Complete ''Queer Lodgings''

Since then I have completed 3 more which have not unlocked:

* Attercop! Attercop!
Complete ''Flies and Spiders''

* Escaped the dungeons of the King
Complete ''Barrels Out of Bond''

* The Mountain-king's return
Complete ''A Warm Welcome''

Steam is set to online and saved games cloud is switched on.
I'm guessing this may be a bug!?

Any help appreciated. Thanks.