Borderlands 2 Tiny Tina's Assault On Dragon's Keep Walkthrough Sidequests Part 18 – Magic Slaughter: Round 4

Wave 1
Head into the Circle of Slaughter and go over to the Lever O' Magic and give it a pull. Immediately the traps are triggered on you. Along with them come a group of dwarves. This means plenty of Warriors and a few Dwarfzerkers to deal with. Take them out quickly to avoid getting swarmed as the Longbowmen start to appear to back them up. Those longbowmen are a prelude to the soldiers that appear right after them There is at least 2 badass archers in the ranks of the foes to the North.

Wave 2
Get on through to this part and you are fighting more Sorcerers and Mages. Most of them will be appearing over on the Western side of the arena near the Lever O' Magic.  Kill them off and the huts will rise from the center of the arena. This means that you are going up against more Orcs. It starts easily enough with Warriors and Hirelings. After them come a few Knights, of the Paladin variety, for you to deal with. They are quickly followed by more Dwarves with at least 1 Badass rushing you. As that happens Skeletal Archers will appear over to the North that you will need to worry some about.

Wave 3
Once again this wave starts with Skeletons rising from the center of the arena to try and rush you. Work quickly to take them out before they can swarm you and run you through. Remember that the stairs makes for good choke points for area blast with grenades and rocket launchers. Once you have dealt with them then there are more Dwarves that will be coming after you. They will be appearing in a good number so be ready for it with some Fire-type weapons to kill them off quickly. They get some Archers as reinforcement from the North so kill them then deal with the rest.

Wave 4
You will be prompted, once again, to take out the crystal above you. There are also a few Badass Knights that are unleashed against you here so be ready for that. They just come with more and more Knights and Paladins. Kill them off and you have more Skeletons that will appear to come after you. This group is mostly Archers with a few that will come after you in melee range. Get through that group and a new one will appear from the center of the arena. These have a few Skeletars among their number. Remember that Skeletars need to be destroyed multiple times or you can kill them and then pull the sword from their to finish them off. They are backed up with Blue Skeletal Archers so keep that in mind (explosive damage against them for quick kills). The final groups of the wave will be a number of mages (Radiant, Necromancer) with a Towering Skeleton coming after you. Finish all them off and you are done with the Round.

Rewards:  Eridium: 10, XP: 1840