This mission has one of each of the Queen Ants, King Spiders, Death Queens, and Greater Wild Dragons. There are also numerous smaller cousins of the aforementioned enemies. They are easily group-aggro'd by explosives.
One solution to defeating this level is by having someone bring a long-range sniper rifle to get the attention of the mini-bosses one at a time. Make sure you gain command of the ranger unit on the ground so that they don't charge forward into combat. Back everyone up to the two buildings and take time to prep any Air Raider equipment. Have the sniper aggro the Greater Wild Dragon first, when he paths nearest. Everyone with AoE should hold their fire until he's closer, and then take him down before progressing to the next set. Use the twin buildings as cover from flames (Air Raider's vehicles are also handy for reducing damage taken).
Both the Death Queen and Queen Ant will come with swarms of insects, bugs, and dragons. Ideally, the sniper should lure the Queen Ant out first, but it might be difficult to get her attention without the Death Queen deciding to join in. It should be a survivable battle, at least on Hard Mode, as long as you don't also pull the King Spider.
After defeating each mini-boss and their minions, you can take the time to prepare for the next fight.
1-10 | Reconvene • Spreading Disaster • Winged War Goddess • Setting Sun • Wind Break • Underground Cave • Eruption • Retaliation • Beach Fear • The Return |
11-20 | Air Force • Day of the Demons • Takedown • Preventing Landfall • Land Collapse • Fortress Siege • Valley Shadows • Artillery • Breaking Through • Shining Stronghold |
21-30 | Into the Depths • A Trap • Giant Robots • Summit Ship • Anchored • Silver City • Crimson • High-Speed • Bloody Mountain • Brute Force |
31-40 | Charge Phase 1 • Charge Phase 2 • Dark Prisoner • Charge Phase 3 • Thunder • Infiltration • Convergence • Inferno • Starship • Dense |
41-50 | Crossing • Search • Waterside Bugs • Annihilation • Natural Calamity • Steel Beast • Void Ship • Blue Fighters • Earth Defenders • Fleet Attack |
51-60 | Mountain Pass Trap • Fortress Frenzy • Pincer • Ravages of War • Air Mobilization • Bug Invasion • Transport Ship Surprise Attack • Bug King • Crazy Skies • The Fleet Below |
61-70 | Bad Premonition • City of Horror • Mountains Ablaze • Breaking Through (2) • Bug Tower • Fortress Attack • Mountain Liberation • Sniper Attack • Mountain Giants • Towering Beast |
71-80 | Teeth of the Universe • Giant Ship • Spearhead • Tower Siege • Den of Thieves • Death Queen • Machine Squad • Monster Party • Labyrinth of Light • City Flaws |
81-90 | Monster Camp • Fallen Flagship • Heaven's Army • Encircling • Divine • The Threat • Troubled Valley • Battle to the Death • Massive Mobilization • Legion of Monsters |
91-94 | Scorching • Demon Army • Surrounded! • Star Eaters |
DLC 1: Special Forces | Exploration • Giant's Advance • Silver Camp • Citadel • Floating Fleet |
DLC 2: Mutant Rampage | Advance • Mountain Assault • Enemy Camp Infiltration • Underground Advance • Giant Robots • Battle Species • Beast Mountain • Dark Arena • Gathering Around • Armored Species • Iron Wall • Mountain of Change • Whirlwind of Death • Bugged City • The Tough • Golden Darkness • True King • Final Impact • Into Destruction • Ship of Dragons |
DLC 3: Beyond Despair | Tracking • Underground Complex • Blocked Pass • Close Formation • Dragon Ship Fleet • Heavy Artillery • Bloody River • Dangerous Goldmines • Beast Mobilization • Total Protection • Aerial Bombing • King of Armor • Cannon Defenders • Traps Behind • Four Kings of Nightmares • Resistance Against the Twilight • Shivering Nexus • Three Giants • Crimson Lotus • Starry Prison |
1-10 | Reconvene • Spreading Disaster • Winged War Goddess • Setting Sun • Wind Shear • Underground Cave • Eruption • Retaliation • Beach Fear • The Return |
11-20 | Air Force • Day of the Demons • Takedown • Preventing Landfall • Land Collapse • Fortress Siege • Valley Shadows • Artillery • Breaking Through • Shining Stronghold |
21-30 | Into the Depths • A Trap • Giant Robots • Summit Ship • Anchored • Silver City • Crimson • Assault • High-Speed • Bloody Mountain |
31-40 | Brute Force • Charge Phase 1 • Charge Phase 2 • Dark Prisoner • Charge Phase 3 • Thunder • Infiltration • Convergence • Inferno • Starship |
41-50 | High Density • Dozing Beast • Crossing • Search • Waterside Bugs • Annihilation • Natural Calamity • Steel Beast • Void Ship • Blue Fighters |
51-60 | Earth Defenders • Fleet Attack • Mountain Pass Trap • Fortress Frenzy • Pincer • Ravages of War • Crash • Air Mobilization • Bug Invasion • Transport Ship Surprise Attack |
61-70 | Bug King • Crazy Skies • The Fleet Below • Ill Omen • City of Horror • Mountains Ablaze • Breaking Through (2) • Bug Tower • Fortress Attack • Mountain Liberation |
71-80 | Battle of Giants • Sniper Attack • Mountain Giants • Towering Beast • Teeth of the Universe • Giant Ship • Spearhead • Tower Siege • Den of Thieves • Death Queen |
81-90 | Machine Squad • Monster Party • Labyrinth of Light • City Flaws • Monster Camp • Fallen Flagship • Heaven's Army • Encircling • Divine • The Threat |
91-98 | Troubled Valley • Battle to the Death • Massive Mobilization • Legion of Monsters • Scorching • Demon Army • Surrounded! • Star Eaters |
DLC 1: Time of the Mutants | Air Offensive • Giants Advance • Recon • Dust Town • Defense Line • Underground Advance • War Breed • Mountain Assault • Enemy Camp Infiltration • Dark Arena • Beast Mountain • God's Army • The Gathering • Armored Species • Iron Wall • Silver Base • Shifting Mountain • Whirlwind of Death • Bugged City • Toughness • Golden Darkness • True Sovereign • Final Impact • Floating Fleet • Into Destruction • Ship of Dragons |
DLC 2: Extreme Battle | Tracking Bogeys • Underground Complex • Blocked Pass • Close Formation • Dragon Ship Fleet • Heavy Artillery • Overflight • Dangerous Goldmines • Beast Mobilization • Total Protection • Bombs Away • King of Armor • Cannon Defenders • Bloody River • Three Giants • Traps from Behind • The Four Horsemen • Cross the Line • Facing Off • Crimson Lotus • Shivering Nexus • Last Bastion • Starry Prison |