This film keeps the narrative moving, potentially setting up a great third film about Damien controlling an evil company trying to corner the global food market. (Unfortunately, The Final Conflict is not the great film we had the right to expect.) William Holden and Jonathan Scott-Taylor give superb performances, and the special effects, photography, and score are excellent.
If there are any complaints, they are how closely the second film sticks to the formula of the first one and how this film doesn't have the same eerie mood of The Omen. Also, one scene is blatantly stolen from Hitchcock's The Birds.
On the plus side, I found Omen II to be less hokey than The Omen, with fewer mumbo-jumbo pronouncements based on ancient poems and the Book of Revelations. The second film seems to be a logical outgrowth of the first, with no confusing contradictions or major plot lapses, except for the peculiar fact that ravens rather than dogs now do Damien's dirty work. If you liked the first film, see the second one!