Other mistake: When Durant and his men chase Lauri out on the streets, they are waving around their guns and causing great commotion and panic amongst bystanders. However, in certain wide shots, you can see some of the extras are standing still, and not reacting to the chaos as they were in previous shots.
Trivia: Executive Producer Sam Raimi reportedly told co-star Larry Drake that despite his character Durant being killed off a second time at the end of this film, there were plans to bring him back in a later installment once again. Essentially, Durant would become Darkman's version of the Joker or the Green Goblin- a recurring arch-nemesis that never "truly" dies, and is always brought back to life one way or another. Unfortunately, after the release of the third film, no further sequels were commissioned, so this idea never came to be.
Trivia: "Darkman II" was the first direct-to-video release for Universal Studios. It was granted a larger budget in comparison to many other subsequent direct-to-video releases and had a decent marketing push, as Universal was testing the waters for movies exclusively made for the video market. The gamble with a success, with Universal continuing to release direct-to-video (and more currently, direct-to-Netflix) releases well over twenty years later.
Trivia: In the original film, Westlake/Darkman was played by Liam Neeson, whereas in this sequel the character is played by Arnold Vosloo. However, if you pay close attention, you can see that several shots of Liam Neeson from the first movie were used as stock-footage in this film. (Ex. the opening flashback is a mixture of both Neeson and Vosloo footage cut together, and at least once you see a dramatic close-up of Darkman's eye which is a shot of Neeson taken from the first film.).