Overview:
-Estimated trophy difficulty - 6/10
-Offline (breakdown) - 7- 14- 4- 1-
-Online (breakdown) - 1- 2-
-Approximate amount of time to /100% - 15-20 hours
-Minimum number of playthroughs needed – 2
-Number of missable trophies – 4 (Mounted Unit to Level 10, Knights to Level 10, Infantry to Level 10 & Archers to Level 10)
-Glitched trophies – None
-Do cheat codes disable trophies? – No cheats

Introduction
This game plays like all the other strategy games on the PS3. You control a varying amount of units and the aim is to beat the opposition, take control of an area of the game map, etc. If you have played strategy games like Sid Meiers, Valkyrie Chronicles, etc, you will already be aware of the general setup of these types of games.

This game is based upon the Hundred Years' War between England and France. The battles you fight are all based around famous battles from this war.

Step 1: Tutorial
Start a new campaign and then select the Tutorial Campaign. This takes about 20-30 mins to complete and gets you used to the controls of the game. Playing this will net you the Let the Battle Begin trophy.

Step 2: 1st Playthrough (English Campaign)
Your first playthrough should be the English Campaign. (Honestly, it does not matter which you do first, but I did the English campaign first, so this roadmap will follow that process.)

When you start the campaign you can choose your difficulty. I played on Easy as the trophies are not affected by difficulty; choose whichever you feel comfortable with. The campaign is split into 16 chapters with separate mini-battles dotted around the map, which you can use to level up if you feel you are too weak to complete the main battle.

When you first start the campaign, there is a mini-battle available where you get to deal with a revolt by French peasants. This is a great place to power level for the first part of the campaign. I suggest replaying this level quite a few times, until your completion time is around 45-50 seconds. At this point you should be more than strong enough to also get the "Invincible" trophy.

Replaying this mini-battle increases the levels of your units, which will helps with the battles ahead. You can play this battle as many times as you like, as long as you do not continue with the campaign (if you do this, the battle becomes unavailable). You get 100 gold every time you complete the battle and the money will come in very handy as you progress through the game.

I found that the best method to winning battles during the campaign was to have at least eight units of archers and place them in the front row. The archers take out a great amount of enemies, which reduce the damage your remaining units take. Always ensure that whenever the enemies get too close and start overwhelming, that you move your archers to the back line and have them support your other units.

If at any point you struggle with a campaign battle, I suggest using the other mini-battles that are dotted around the map to level up and get yourself some gold, which you can use to purchase additional units or weapons, etc.

It is also worth pointing out that some people are having trouble with Chapter 13. The easiest way to complete this battle is to deploy two units to the very top of the map. When the battle starts, move one of these units into the Victory square near where you have deployed. Doing this will make the enemy cavalry flee which will greatly increase the odds of a win for you.

Step 3: 2nd Playthrough (French Campaign)
For the second playthrough, play as France. This campaign is slightly different in the fact that there are only 10 chapters, but it seemed to me to be a lot harder than the English Campaign, even when the difficulty was set to Easy.

Again the tactic that I found worked the best was to have archers take out as many enemies as possible, then use the rest of the army to mop up. By now, though, you will already be accomplished enough in this game to use whichever tactic you feel comfortable with.

Remember, the non-campaign mini-battles are there to use to gain money and strength. So if you are struggling with a campaign battle, use these other battles to power up.

Step 4: Secret Trophies
In this step you are aiming to get the four secret trophies, which are to complete a battle using only one type of unit. The four types of units are: Mounted, Knights, Infantry and Ranged. See the trophy guide for details on these 4 trophies.

Step 5: Online
There are three trophies that relate to online play. These trophies are "Best 2 of 3", "Best 3 of 5" and "Tactician".

The first two trophies relate to winning an online Short Tug of War battle and an online Long Tug of War battle. Luckily, I have found a way that these trophies can be gotten in less than 5 minutes. See the trophy guide for details.

You will need to use the following Boosting Thread for online play, as it is very difficult to find anybody playing this game.

Step 6: Mop Up
This is where you will need to mop up any trophies you may be missing.

Enjoy your Platinum!!!

[PST Would Like to Thank paultsmith1980 for this Road Map]

Further Resources:

HISTORY Great Battles Medieval - Guide Supplement Thread