A1: One person figts using the A.G.W.S. at the start of the battle and thats the one that the monster focuses on and you will win. But it does'nt that the others won't get hurt or killed in the process.

A2: What you should do is get a lot of level ups and increase your tech attack moves for your characters by earning T. Points from fighting enemies. Shion's medica all helps and you can transfer it to other characters. By geting level ups, you can get certain moves. Example: At level 20, Chaos can get angel blow which attacks all enemies. Another way is to go to the menu and go down to where it says character and press it. It brings up the list of characters and click on the character that you want. Next it will say if you want to equip or unequip weapons/ect for your characters. Down below where it say unequip, it will say improve T.points. Click on it and it will show you the characters and if you have enough tech points you can improve your strengh, evasion, and so on. It will tell you the maxium for each one and if you reach the maxium for lets say evasion it can not be improved until later on in the game. Guarding can help out to. By guarding against the enemies, it will reduced how much the enemy takes off of you when they hit you. When you guard not only will it reduced the amount taken from you when the enemy hits you but you can do a tech attack. If you hit once then press x, it will let you do a tech attack when it is your turn again. Extracting skills and then picking 3 of them to set can help. Also transfering ether skills to others can help out a lot.