Other mistake: When Darry is in the basement under the church, Darry is laying on the floor surrounded by a circle of sunlight appearing through the pipe. Then follows a series of cuts between Trish at the open end of the pipe, and Darry. Why do we not see a silhouette of Trish on the floor rather than a perfect circle of light?
Other mistake: After the creature flies out the barred window with Darry, you see some bars missing from the earlier intact window, but where some of the bars are missing, there are intact bars surrounding it. The creature couldn't make a hole in two different places while flying out.