On the whole, this is quite a fun game to play, but it does have a few problems.
Campaigns: I haven't actually completed all these yet, but I have enjoyed what I've played so far and I feel they have a good storyline.
Graphics: This game has superior graphics to it's predecessor and the 3d engine is very good.
Music: the game deserves credit for the effort that has been put into it's music. There's a mixture of classics from Stronghold 2 and some new tracks, some of which even have lyrics!
Gameplay: As I said, the game is fun to play!
Glitches: although most of the bugs have been patched now, still a few remain. Sometimes dying soldiers appear giant across the screen, which I suppose doesn't really matter, but looks a bit 'unprofessional'. more annoyingly, sometimes units get stuck inside buildings and can't do anything unless you delete the building, which kinda sucks. Although these bugs may be patched, no more have been promised.
No skirmish mode: You can't play against AI players outside the campaign, which I think is a shame - a big shame.
Very similar to Stronghold 2: the game is remarkably similar to it's predecessor, well only without a skirmish mode!
Conclusion: I like this game, but I'm not sure if it's worth the £20 price tag. The issues could be resolved with patches but apparently there may not be any more unless the game gains popularity on steam. That's the reason that although I enjoy the game, I cannot recommend it.