ShadowofGlenn from gamefaqs.com wrote:I've been doing some testing on Ranks, these are my findings so far:
There are many criteria that need to be met for a certain rank, and not meeting just one may cost you your rank even if you far surpass the quotas for others.
Each map has a level associated with it which determines experience from beads, mirrors, dig, steal, etc....enemy level (non-story) and maybe the map level determines the criteria for each rank.
Here are the criteria that effect rank, and what I believe to be their influence
average Exp. divided by the number of characters used (including switch) This means if you are putting down beads for 15 exp, this will hurt your score.
average damage divided by the number of characters used (including switch). If you have counter attack on battle lust is not active, so your score may be hurt. (Cross counter appears to always critical, so this is an excellent skill when boosting your rank)
average Exp. divided by the number of characters used (including switch) Any misses are counted as zero, so high def, high evade characters help bring this value down
This is a factor, but not the most important. Each rank may have a set number of turns you must complete the battle in, but it is much more important to gain exp, and give damage. So you don't have to kill 3 enemies at a time with Lazlo, give the kills to other characters as well. Just make sure you're not taking alot of extra damage.
Like turn count, you want to do the best you can, but don't sacrifice damage and exp, by spending your time laying terrain. If you have a good opening to do some big damage without terrain, do it!
Some sources state you must get all treasure chests, I have not found this to be the case. on hard maps to S rank like Graska Palace and Thunder chamber, just focus on the enemies.
Other things to note:
1. exp gained is based on damage, and there is a bonus for a kill. Hit to kill every time.
2. weapon based runes help bring in the big points. Most have damage multipliers, and runes never miss.
3. Berserk belts plus attack rune users (kika comes to mind) are very nice.
4. Attack boosting equipment is a must: Hand of God, Ogre Mail, Ogre Breath
note: if you are looking for bronze medals if you can make it through a map without damaging any enemies. you will always obtain C rank. No matter how much exp you earn through other methods, with damage given as 0, you will achieve C rank.
This is just a start, I need to test more. I open this up to you: Gamefaqs, Suikosource users.... what else do we know?