I generally avoid RTS games because of their difficulty (or just because I'm very bad at thinking strategically). Does this game have selectable difficulty levels? Is the game "stressful" to play?

I adore the setting and style.

If you generally find RTS games difficult then you're going to hit a point in the story mode where you feel a bit battered, especially if you're trying to do the heroic objectives.

I wouldn't say stressful in general but Tooth and Tail can be hectic and a little chaotic from time to time. I recommend you watching some gameplay videos or reviews.

There's selectable difficulty levels for the skirmish matches. As far as stress goes, there's an intentional, hard limit on the degree to which you can micromanage thanks to the way the controls were implemented, and I found this to really help reduce the stressfulness of it all. Matches are also relatively short, so losing doesn't feel like a big deal when it does happen.

Controls can also be a big hinderance in this game since you can only command groups and not single units. So in a mission where you get hammered by Wing Demons every two minutes you will have a very hard time since the only range/air defense unit you will have will be a tier 3 unit. And even if you have two units you cant just leave one in your base for defence cause you can only move a group. This is one of the issues with the oversimplified controls in the game. Consequently some missions become 10x harder then they should be.

So yes the campaign can get very stressfull at some point.

If possible and you guys have the luxury, it'd be cool if at some point you could make the AI a little more bold in Skrimish. Take risks and such.