Dungeons 4

This achievement can be difficult to get however playing on easy on "The Last Stand - This Time for Real!" makes it so much easier if your going for a 1 shot playthrough. When you first start first focus on building up your defenses and make sure that the enemy troops don't push the evil lord close to the end on your side (simply just kill the enemy troops with what you have I never had a problem taking them out with the troops they gave me ).

Before anything I should say always make sure to keep the point as close to the middle as possible cause if the boss gets to close to your side Tristan calls himself to help you. Tho you will know when he's being pushed via the announcer saying so or the announcer saying there's followers going to help thannis or whatever his name is lol. You will want a big maze for the entrance, I did long winding tunnels basically overlapping each other filled with spikes, slime, wall chainsaws, the puncher traps (forgot what they are called) all in it.

I do have to mention the dungeon is filled with spider and lava enemies the spiders being the easier to take out the lava enemies needing more beefy then you have at the start troops (I used orcs for their tank ability and the cheapness of replacing them lol, after a certain point the game will introduce dwarfs to the left of your base which are really hard to take out if you haven't invested into building your troops up (if you haven't already there is a lava enemy (forgot their name) spawn ground the left of the main entrance that you see at the start of the game.

Simply have your snots dig a tunnel from the dwarfs entrance all the way thru the lava enemies spawning ground to your tunnel of winding traps (easiest way to defend your base in my opinion is to have 1 way in and out) after a while the dwarfs will kill the lava enemies and it will be just you and the dwarfs, if you built a big enough trap maze the enemies should be dying inside of it so you won't have to worry about it . AS soon as you complete this go ahead and destroy all the buildings on the map for the other achievement Evilification (I don't know how to tag achievements pardon). After doing that go ahead and push the point to the end and you will get all 3 achievements (being this one, Evilification, and The Last Stand This time for real!) after the cutscene.

If you downvote please explain why so i can edit the solution and learn from my mistakes :)

Small Edit I forgot if you do Evilification on the same playthrough it will pop as soon as you demolish the last building not at the cutscene pardon for the mixup :)