FATAL FRAME: Mask of the Lunar Eclipse

This is quite simple to do if you unlock the Optimal (Zen) camera upgrade from photographing all 233 of the ghosts, and fully upgrade all cameras. For the total score missions, it becomes a matter of using fatal frame shots to get points and lower their health for one final fatal frame combo that ends with blasting them with the lens of your choice to finish them off for a large bonus. By and large, I used the Lunar lens with Ruka to do finishing blows for a large amount of points, and the Crush lens for Misaki to do as much overkill as possible to get a moderate amount of bonus points. Oddly, my high-quality film seemed to not go down, possibly as a side-effect of the upgrades; I naturally hadn't unlocked the Infinity upgrade yet, so why that would be is a mystery. I imagine this has a big effect on missions like 7-2.

Most missions only took a try or two to figure out the pattern and get an S rank, due to the immense power of all of the upgrades. There were a couple of notable exceptions:

Mission 1-2

I was stuck on this one for hours. I had trouble with the strategies shown in videos online, since I dealt far more damage and gained far fewer points. I have no idea why.

My strategy consisted of waiting for him to crawl on the floor and lunge, circling him, and shooting a max shot at his back. This strategy allowed the damage-to-points ratio to stay somewhat consistent, until he was near death at almost 100k points, and I hit him with a Focus shot (at chain 19) for about 60k, bringing me up to 155k with an S rank.

Mission 4-3

I got them consistently approaching and respawning in front of me. I'd alternate between normal shots to gain spirit points and Explode shots to kill multiple ghosts at a time, lowering the flashlight whenever idle. Kill them as quickly as you can so that they respawn as many times as possible within the time limit; it isn't worth waiting to get all three at once.

Mission 6-1

I basically walked backwards in a circle, to kite them around and have them respawn in front of me. I mostly used Focus to deal damage, normal shots to regain spirit points, and lowering the flashlight frequently to recharge.

Mission 9-1

Separating the enemies and handling them individually yielded the most points for me. When they overlapped, I usually wound up taking out a large chunk of their health for minimal point gain, since the ones passing in the background don't get the full combo with the finishing blow. It took a few tries, especially since I was hitting enemies through the grave in the center of the area.

Mission 10-1

I found that stopping the fatal frame combo at 2 yielded the highest points. In other words, fatal frame them twice in a row, wait for them to teleport, then fatal frame them twice again, with the second being a Crush shot. Going for a three-shot finishing combo yielded less points on the last shot than doing two, oddly.