Like plenty of people I ended up originally watching this in bits and pieces when it was airing and only finally got around to watching it right now. The the rest of this review contains spoilers so be warned.
Seasons 1 and 2 held my attention fairly well. While the production as a whole was low budget it made me care about the characters involved and the fact that the 2nd Mass was always on the run and being barely held together through an apocalyptic event.
I barely even remember most of Season 3, most of it was spent either on the Volm superweapon or the "traitor in our midst" storyline. Definitely started to feel like the story was losing steam, and Season 3's ending but tweaked would have made for a good end to the series as a whole.
Season 4's ghetto plot was fairly engaging and made me interested to see how our characters would circumvent it, but that rapidly gives way to the very boring and just poorly acted out Lexi plot. A snoozefest indeed up until the final episode or so.
Season 5 felt like it somewhat returned to form and tried to raise the stakes somewhat (expanding upon the Dorniya's relationship with Tom, the growth of the Mason militias, the final plot to March on DC) but it just ends in an absolute whimper. The Espheni queen is taken out with barely any effort and the whole war machine falls apart. It's just, not the ending I would have wanted for the show.
The acting was definitely TV level quality circa 2011-2012. Tom and Dan's relationship is what really made me stick around for as long as I did since I think they gave the strongest performances out of everyone in the main cast, even if that wasn't much. The effects are likewise dated and it just rings of a low budget and feels like an ambitious 80s sci-fi series that falls flat on its face. Am I upset that I finished it? No, definitely not, but I wouldn't really recommend it to any of my friends unless if you're interested in how far we've come in the past ten years I'm terms of TV production budget.
2-2.5/5