In what order did you acquire your upgrades in this game? Why did you upgrade in that order and how did it work for you?

Rage, ShieldWall, Then rush for cure, then lead into CA and wall. From there use the rest to get Giant upgrade 1 and electric wall.

Haven't played campaign in a while, but I think I went to shield wall, then cure, and then picked up farrows if I recall correctly. I also got mage spells for the last level, I think. I didn't use most of the upgrades that Rain mentioned as I just went straight-up spearcher for pretty much all the levels, though considering his crazy fast time I might have to try his strategy if I ever play the campaign again.

Quote from 59saintdane

Haven't played campaign in a while, but I think I went to shield wall, then cure, and then picked up farrows if I recall correctly. I also got mage spells for the last level, I think. I didn't use most of the upgrades that Rain mentioned as I just went straight-up spearcher for pretty much all the levels, though considering his crazy fast time I might have to try his strategy if I ever play the campaign again.

Fairly sure everyone haven't played the campaign in a while. I only beaten it on normal, back when I first found out about SE. :I
I recently came back to SW2 since I never beaten it on insane.

In the beginning I go for farrows then to Shinobi, so dealing with magikills would be piece of cake, then I tried to get electric wall, then cure as I start to right against Chaos.

I got Shinobi ASAP, then made my way to the spells. After that I got castle archers and wall. Never got shield bash.