By 
One definitely needs to pay attention to room decor when choosing rooms to place units on. I accidentally chose a room with a decoration that prevents everyone in that room from moving. What this means is that once I summoned that room on the battlefield, it was just stuck there. What I should have done when I ended up with that room was to move the hero (the one who summons other rooms) to where the enemies were, then summoned the other room in range of the enemies. That way, as soon as the enemies moved adjacent to the non-moving room, that room could attack.
A second thing I learned was that having a healer in the room practically guarantees invincibility. By placing the healer in the rear, the healer can use heal on all the teammates in one turn as well as stay protected from melee hits. Of course, in certain types of rooms, that means giving up the rear spot for the healer and putting a mage (if you have one) in a more vulnerable spot, but the instant hill each time it's your turn is well worth it.
Battles seem to be getting a little harder now where just sheer numbers don't seem to matter as much. It's a little overwhelming just the sheer amount of room and unit combinations you can take with you into a fight. It's also nice that you can level up all your secondary characters up to the level of your main character instantly, which takes away a lot of the grinding so that players can just focus on room strategies.
The plot so far still seems pretty shallow and non-existent. I'm wandering around from point to point on the map but I'm not sure what I'm looking for, other than asses to kick.
