Around 01:12:14, the mercenary gets shot on the wrist, but on the next shot, he's holding his arm.
Around 01:42:29, Roland's boat is close to the stairs, but at the end of movie, around 01:51:39, the boat is on the middle of the sea.
In the end, in the Museum in Normandy, founded by Baron, who lived in Africa, we see different African animals. one of them is clearly brush-tail possum, who lives only in Australia and New Zealand.