Master and Minion Multitude Achievements The easy way to unlock the Minion Multitude Achievement is to visit the Dungeon with an ultimately imbued Arcanium Sword and Armor.
Weapon: Don't balance out your minion sacrifices so that you get a little bit of everything and instead focus on increasing the damage (brown minions) and just a little of the green minions to do massive damage with the power blow.
Armor: Don't balance out your minion sacrifices so that you get a little bit of everything and instead focus on increasing the defence (brown minions) and just a little of the green minions to regenerate life slowly (about 5 to 10%).
Dungeon : Don't take any minions with you and when you go into the dungeon and approach each group of enemies slowly so that you face only a few at a time. This way if your health gets low you can run away for a bit and regenerate.
Good Luck!
Lifeforce Ned some extra lifeforce? Visit the tower dungeon and use the staged fights to earn lifeforce needed to make the upgrades. A mix of minions will let you set ambushes and revive any losses.
After death Power-up If you have died recently and your minions are weakened, go to either Halfling Homes or the village of Spree, and break all the objects for new weapons and armor. Heavens peak is good too once you can get in the city.