Bosses can be difficult to fight, and there are quite a few in Tower Defense X that you will have to face if you want to progress in the game. Our tier list has not only ranked all the bosses you'll fight from strongest to weakest, but also offers tips and tricks on how to win so you're ready for battle!
Tower Defense X Bosses, Ranked
Bosses are the final enemy you'll fight in every game mode, and they're all different. Some are immune to certain attacks, and others have weaknesses that you can target. Bosses placed in S level means they are the strongest and most powerful, and D level are the weakest and easiest to defeat.
| Tier | boss |
| S | Eradicator MK | habit |
| A | Rooter MK II |
| B | Rooter |
| C | Exo Santa, Nightmare Exo Santa, Resurrected Plague Doctor |
| D | Super Revived Toilet John MK I9X, Plague Doctor |
Related: Tower Defense X Endless Mode Abilities Tier List
S-level bosses
- Eradicator MK | habit – The Eradicator MK | Habit is one of the strongest bosses to face. It has an Annihilation Sweep ability, which allows it to kill a group of targets quickly. If it enters its Energized Fury phase, it can heal all of its Shield and Health back to maximum.
A-level bosses
- Eradicator MK II – The Eradicator MK II has two 6-tube rotary medium machine guns attached to each of its arms as well as two 2×2 rocket pods on the shoulders, and 1×2 on each leg. It has 50% resistance to fire, and 30% resistance to explosives. Its attacks deal high damage, so make sure you're equipped with the right skills that can counter its fire and blast resistance. (Using a Warship is the best way to counter the attacks; having a Bottom Path Railgunner tower will be the best chance for defense.)
B-level bosses
- Rooter – The Eradicator uses a 12-Shot Blast Attack and a 3-Shot Rocket Blast Attack. The 12-shot attack can be avoided by placing cheap towers around the Eradicator, causing it to shoot them instead. A great tip to remember is that the Rooter can be frozen, and Patrol Ships can be used to overpower it. With the right skill and timing, this boss can be beaten quickly.
C-level executives
- Exo Santa – Exo Santa has a very high HP pool but its damage output is low. You can use missile Soldiers to take it down quickly (though not cost effectively) or you can use Laser Gunners, Railgunners or Juggernauts.
- Nightmare Exo Santa – Nightmare Exo Santa has high HP and low damage. It uses Festive Spray to deal damage, but it has a very long cooldown. Repeatedly using Juggernauts, Railgunners, or Laser Gunners; you can take it off quickly.
- Resurrected Plague Doctor – The Revived Plague Doctor has a lot of health, but it's still an easy boss to fight. You can freeze this boss at 20+ by using Cryo Blasters, and you can counter its explosive and bullet resistances by using Juggernaut and Laser Runner.
D level bosses
- Super Revived Toilet John MK I9X – The Super Revived John MK I9X Toilet is one of the slowest bosses you will face. Although it can spawn Eradicators to stun your towers, the Super Revived Toilet John MK I9X can be easily stopped using fast moves and high damage abilities.
- Plague Doctor – The Plague Doctor moves slowly in comparison to other bosses. It can be frozen using Cryo Blaster, and it can be slowed down (even more) by placing expensive towers in its way, as it takes longer to destroy them.
If you're looking for Tower Defense X cheats, we have a Tower Defense X cheats post on Pro Game Guides to help!
