Dungeon Defenders
12 Achievements
200
80-100h
Perfectionist
Earned the Flawless Victory Award on all Missions on at least Medium Difficulty
10
How to unlock the Perfectionist achievement in Dungeon Defenders - Definitive Guide
Easily obtainable once you have a maxed character (preferably a Squire and Huntress). Depending on your character, you're going to want either a Tower or Hero build.
Squire - Harpoon, Bowling Ball and Bumper Blockades are the ones you'll want to place the most. A high Attack Rate is a must, this way your towers can fire extremely quick, my Bowling Ball Tower fired every .25 seconds and my Harpoon was about every .50 seconds.
Huntress - If you're playing by yourself, lay plenty of Explosive and Fire Traps, if you're playing with others, you can simply run around shooting enemies. If you have a weapon that fires quickly and a high damage, you'll have no problem.
Apprentice - The Apprentices' Magic Missile and Deadly Strike Tower are great. If it's a level with tight corridors, the Bumper Blockade/Spiked Blockade and Fireball Tower devastate.
Monk - The Monk is mostly a support class, so it doesn't have the best Towers for solo'ing. The Ensnare Aura, Strength Drain Aura, Spiked Blockade Tower and Electric Aura can work well together.
Know where each enemy spawns (to be more specific, the Wyverns, place plenty of Tower aiming at where they come from).
As I said, Medium is just more tedious opposed to difficult with a maxed character(s).
Courteous of MetalSocks:
You can check to see which levels you have already achieved a flawless victory on by hitting Y at your crystal in the tavern.
The crystal can never take any damage to achieve this on all levels including Glitterhelm bonus level while on at least Medium difficulty.
The Flawless Victory Award is given for completing a level without the Crystal Core receiving any damage for the entire duration of the level. This must be done for every Campaign Level, including Glitterhelm Caverns.
This is best attempted when you already have a Level 70 Tower-Squire and a DPS-Huntress, on Medium difficulty. Use the Squire to shore up your defenses during the Build Phase, and the Huntress to take care of mobs during the Combat Phase.
You can see if you have achieved the award at the end of the round by checking the Hero tab at the Crystal and pressing . You can also check it at the Crystal in the Tavern.