Hey there!
Hadr is 25% off during Steam Winter sale which means the whole bundle (game + soundtrack) is almost 50% off !
You can wrap your presents in it (but be careful, you know what it can do) or even better: You can give it to someone as a present if you like the game!

And update was made to the game and you can get a seasonal achievement (meaning you can only get it during winter sale) if you manage to find and disappear every single present in the game. There is one hidden in every room, thats all I am allowed to say!
Good huntin.