Slitherine

I know, I know, it ain't the Real Legion Arena, but still, I have a question about the campaign.
are you able to play the Celts in it? I just beat the mission where you have to defend the seige walls, not sure what its name is, and it keeps sending me back to the Roman Campaign.

No, you cannot play as Celts in the demo.

Yes, Siege of Alesia is the last scenario in the demo

Yes, the demo is quite short ( ) But there is a good deal of variability.

First, try to beat all the difficulties (extremely hard for me)
Then, try to win with certain kinds of armies (something i am just now starting).
Or, try to max out your fame.
Or, try to win without buying anything. Or without promoting (I couldn't do it on Normal). Or both.

If you look at the "Demo scores" thread, tora_tora_tora has done amazing things, and there are others with achievements, but I will let them tell you

Best of all, order the game. I can't wait till my copy gets here