Good game, though, the prizes that you get for, like, getting a characters equipment to level 1000 are ridiculously low, as at that point, you're already getting a lot, a lot more money than that achievement gives to you.
The writing is extremely small, even when I zoom in so much that I have to scroll a few times to see all of the gamescreen, the writing is still small.
Once you have your haunted house fully upgraded to 129/129 (you'll see a Congratulations screen pop up) then you can click on the door and open it!