Board Thread:Game Discussions/@comment-203.59.61.54-20150618085055

I just finished buying all the castle expansions, there are no more to click on in my game, but i did not get the room to stretch achievement. as far as i am aware the last expansion is supposed to cost 2,000,000 but i somehow bought the two in front of the drawbridge for only 1,000,000 together. i would like to know if anybody else has had this problem, is there a way i can still get the achievement?  