Here is the full list of all 12 Doctor Who: The Edge Of Time achievements.
You saved the universe from the Reality Virus!
You would make a good Dalek.
You got caught by the Daleks more than 10 times.
A broken pillar is no match for your throwing arm.
You've made your way through the forest.
You explored the abandoned cave in the forest.
You've just taken an important step in achieving your destiny.
You smashed more than 5 pots in Sir Manfred Grayle's home.
How hungry are you? You ate more than 10 custard creams!
You managed to figure out the code to the safe in less than 60 seconds!
You proved your genius by activating the laser core in under 5 minutes.
You infiltrated the Dalek temple without getting caught once!