The length of Dolph's cigarette varies inconsistently between shots.
When Damyan arrives at Vlad's place you can see several crew members reflected on the glass door when he goes inside.
When Ray meets with Leo in the bus, there's a clear reflection of lighting equipment in Ray's sunglasses.
When Carver leaves by car in the last sequence the plate says CZ, indicating that the car is in eastern Europe. However, the road sign reads "One Way Only" which is a sign that does not exist in Europe.