Finished the campaign of Fallen God as well now.
Honestly, the entire Spellforce 3 series wins so easily in the "best writing" department, it makes the entire rest of the genre look like fan fiction (and that includes the better ones like SC / WC).
I'd say Fallen God was actually my favourite, story & writing-wise and also concerning your heroes, they were very varied and had some obvious thought put into their unique abilities.
What I didn't like was the Troll RTS gameplay.
While I love the idea of a race with way fewer but much stronger units (I suck at microing so that does make things somewhat easier for me), the execution made all of the ideas pretty much for naught.
All other races allow you to hotkey together your military buildings so that you can quickly produce all new troop types to where they need to be.
The trolls, however, have only two basic units (one ground, one air) + titan.
You get all other units by sending the basic ones to specific camps. That gets you the next tier of units. Those units can then be sent again to camps to get the next tier. And some of those can then be sent again for the final tier.
Good idea, sure, but:
All of this has to be done manually. It's a fucking nightmare of microing every little unit to camps (multiple times) until you get the unit you actually want.
It may be possible to set up chains of buildings (so that each one sends their "output" to the next building, etc.) but that would require dozens of buildings and they are pretty damn big.
To make matters worse, when you have a unit grouped, it loses that group when being converted to a different unit. So you can only really group the "final" units. That might be patched at some point, but who knows.
What they should have done is to have those "camps" have buttons that you can click to get a specific unit. When clicked, the next close basic unit within a certain range of the camp automatically starts the "education path" and you end up with the unit you want.
If there is no basic unit nearby, one would be requested from the closest free barracks.
That way, it would still take considerably longer than other races to get stronger units, but all the annoying and unnecessary microing would be gone.
And how do you summon the titan?
You have to micro certain units so that they eat 10 corpses. Once one such unit has eaten 10 corpses, you have to (manually, of course) send it to a shrine where it can be sacrificed for the titan.
That ability to eat corpses has to be done manually, too, and so you can't even quickly select all units with the ability, press Q and be done with it - if you did that, they all would start eating, taking each others corpses away so you'd end up with 10 units that ate 1 corpse each.
Of course you also have to remember to not keep that one sacrificial lamb unit in your main military group or else you might accidentally kill it in battle.
It is mind boggingly annoying, I did it once and never again.
One of their unique resources (scrap) is also pretty half-baked.
The basic idea is to have you look for scrap on the battlefield, but they can also just dig anywhere and get scrap at a lower rate.
So you simply end up with a few more of them in a safe corner where they'll forever produce more than enough scrap so you won't have to put them at risk.
As a side note, can you actually unlock the stronger towers in the campaign? I finished it and only had the most basic towers until the very end.