Having not watched it
In the end did they defeat the Invaders???
shareNot at all, though (BIG SPOILERS) the Richard Thomas character, ostensibly the aliens' henchman, gets shot by his pregnant wife (formerly the ex-wife of the Bakula character) who then commits suicide.
shareThis interestingly brings up two major plot device departures from the original series,
1. the aliens now can bleed, and
2. they now can have successful intercourse,
neither of which was the case before.
It would have been better to have conformed it to the original in this.