Delve - The Dice Game

You have a party of four adventurers, each with unique abilities - a Fighter, a Rogue, a Wizard and a Cleric. They will face 6 groups of monsters in order. You fight battles one round at a time, rolling for your adventurers first. For your adventurer's attack, roll 6 dice up to 3 times, setting aside any you want to keep. After the rolls, determine which attacks you will make, based on your surviving characters abilities. For the monsters attack, roll a six sided die for every point of health they have left. The goal of the game is to destroy all of the monsters, and to finally slay the Dragon, with at least one surviving adventurer.