Right now it is very tempting for me to just declare this mod as garbage and forget this nightmare forever, but I decided to give a chance to persuade me that this mod is not as bad as I think it is.
It took 3 game restarts to survive (not win, just survive) an encounter with the smallest UFO on beginner difficulty! It's turret appears to be indestructible, at least for weapons I had at that time. Soon after that I got obliterated in a terror mission where 5 cannon looking turrets where so well placed, that I couldn't shoot them, but they could!
Do I have to run away from turrets as soon as I see one? Are there easier missions in the beginning? The only easy mission I saw was when I took down an interceptor with 2 pilots. Every other UFOs were those with indestructible turrets.
I also tried to watch some let's plays, but soon realized, that they are playing essentially different game: no turrets encountered.
What am I doing wrong?