I'm approaching the end of Day 3 in Devil Survivor OC and I think I've lost at least once in every battle. I got up to the battle with the Shomonkai renegades and was in a very close battle that could have gone either way, and the game froze and my 3DS rebooted. I bought the original 3DS at launch and it was the first time I've ever had a crash. Very weird.
When I reloaded my save I got my ass handed to me a few times. I've had to grind for cash so I can hit the auction and do some fusing a few times, and I even lost in the damn free battle a few times at that point.
It took me a while but I'm starting to favor the abilities that allow me to attack at range. The game loves to use those so I figured I might as well. Things are getting easier because I was able to get recarm on Kikuri-Hime and skill cracked Fortify and Blitzkrieg as well.
I have to admit there are times that I lose in this game because I'm trying to skill crack and I don't kill off the enemies when I get the first opportunity, and there are those battles where I've got the leader of a group to 1 HP and then every enemy runs in and uses charm/affection/media and fully heals them. Grrrr...
The game is a lot of fun, although it's frustrating at times. I don't have a ton of free time so my progress is slow, but I've found myself making time here and there for it. I also have Soul Hackers and SMT IV waiting for me as well so my 3DS is going to get a lot of miles out of it this year I think.