What is the best strategy for (Clearing A Mission with S Rank)?
Top Voted Answer
I've found a lot of unsure answers about this, and for good reason. It doesn't tell us anywhere what you specifically need on each mission for an S rank.
But killing as many enemies as possible, using orb spark (blue gauge) to kill as many enemies as possible, collecting the weapons in each level, boosting your combo, keeping your guard units alive, and certain special conditions have been known to boost your rating.
Try killing every enemy in the level without wasting too much time in between killing, and activate orb spark (blue gauge) as many times as possible when you can kill many enemies at once with it. Also, collect each of the weapons hidden in the stage. If you still don't get an S ranking on that level, you may need to get a better max combo or more kills with orb spark.
The last stat on the results screen "Bonus points" effects your rating, too. I'm pretty sure that score is boosted by collecting the special weapons/items in the level, killing the dragons and catapults depending on the level, saving as many people as possible if the mission required saving people, etc. phillipoll - 9 years ago