Yeah, I got it a few days ago. You're somewhat right with the difficulty spike, the mission with Baldren (and now, with Audrey or whatever his sister is named) have been pretty tough, haven't won the battle for Yuell yet ._.
But I really like the game, the classmate events give a feeling of FE-Supports, and the new promotion system is very interesting.
except for the special commanders like Baldren and co. there aren't really very challenging foes (If you got the hang out of the V2s, they can very easy: a single strike of a fencer can take them out if you destroy the support Vehicles.).
Also, the lacking variety of maps is a bit frustrating... but it's still a great game, I can only recommend it for every strategy fan.