Found some bugs:
They will strike back against XCOM by attacking your satellites if their UFOs are shot
Should be AREN'T shot down.
Marathon - everything takes longer to complete (research, manufacturing, etc) and appearances of new alien species will also be pushed forward.
I can argue with that. I had Floaters in April and Mutons in May - just normally as if I didn't use Marathon. Marathon also makes it harder for satellite coverage. Despite everything costs twice as much and research takes twice as much you still have to maintain 3 countries per month satellite coverage (except January where you can only field 1 additional) in order not to lose any of them - specially talking about classic mode (on impossible you will lose 2 countries at best). So if you think this mode is to ease on you - think again.
Any countries covered at the start of the month (i.e., they're already covered when the Monthly Report comes in) will be off the list of Abduction Mission
I think that country will be scratched from the abductions when satellite will reach it's destination. Had sometimes few missions after I've launched the satellite but before it reached it's point.
Order satellites individually, not in bulk.
I would go otherwise - it's better to build all on the 1 day before end of month the construction is finished rather than build whenever you can. Besides you can gain some Engineers and lower the cost of production. And if dire need of money it is better to sell some power sources / navigation's - you will have that in plenty.
Fusion Cores can only be recovered from alien Battleships and they allow for Fusion Lance and Blaster Launcher research. If you're looking to get those on the middle/late game, just ignore an UFO and wait for the Battleship to appear. You'll need to shoot it down (otherwise it might destroy a satellite) and assault it afterwards though.
Well good luck on fighting battleship with Raven
- Firestorm will be heavily beaten up - and even still mid game you will have much higher priority research than wasting 20 days for fusion core. Firestorm should be fielded just close enough to finishing building of hyperwave decoder, since Raven will not be able to shoot down the Overseer - maybe with some lucky shots and time booster. But normally even Firestorm sometimes must use time booster.
Alien Base Assault
The Tutorial is the most decisive Storyline moment affecting the overall strategy, due to its effect on the game:
Isn't something wrong with "The Tutorial " in the Base Assault mission overview?
Remember that you'll need to build the chamber first then equip the soldier with the armor, otherwise you'll get the message that there's no soldier capable of using the Ethereal Device.
What about changing the armor and putting the psi one again ?
Overall good work.