As I mentioned when I reviewed part 1, this sort of violent episode is exactly the sort of show that "Star Trek: Voyager" should have been doing more of over the years. Instead, too many episodes involved such dull topics as temporal fluxes and holodeck-bound shows. Parts 1 and 2 of "Scorpion" are clearly like breaths of fresh air for the series and usher in a better and more intense sort of show you'd see more of starting with these shows.
At this point in the two-part episodes, Voyager has made an alliance with the Borg. However, Chakotay STILL is worried about this and thinks the Captain was mistaken. I liked this because it's very consistent with his Maquis roots and his misgivings turned out to be very well founded when the Borg started trying to assimilate their new 'friends'! So, IF they manage to defeat the scarier than the Borg new species, they will likely then have to battle the Borg to the death...or assimilation.
In addition to being a darned good show, this also is the introduction of Seven of Nine. She brought some interesting plots to the show, though I also suspect they brought this lovely blonde to the show more for her physical assets. Regardless, the show did improve with the introduction of this character. A must-see show.