Give Bloons the ability to come back to life after being popped each Zombie Bloon can only resurrect itself once. Give Bloons a shield that takes 5 hits to be destroyed. Gives Bloons an extra armor that doubles their health but can be only applied to MOAB-Class, Lead, and Ceramic Bloons. If a Regrow bloon has multiple child bloons, then the child bloons can regenerate up to the original bloon layer, causing the bloons to multiply. Layers cannot be regenerated above the original bloon layer. Gives Bloons the ability to regenerate popped layers. Gives Bloons a special camoflauge that allows them to become undetectable by towers that don't have Camo detection. Slowest bloon in the game alongside with the Z.O.M.G. Immune to glue, freezing, slowdown, stunning, knockback, and most abilities. Slowest bloon in the game alongside with the B.A.D.(excluding boss bloons)įastest M.O.A.B.-Class Bloon in the game. Gains various immunities at later levels, including Camo, Lead, Purple, Fortified, and Zebra. Moves erratically when struck and temporarily becomes immune to damage while doing erratic movement. Has Lead and Camo abilities as well as being as fast as a Pink Bloon.Īlso known as the Test or Invisible bloon. It's also not advised to use insta-kills like XXXL Trap, as you miss a lot of pops from the inside of the bloons, especially in MOAB-Class Bloons.Appears as its own bloon in BTD4, and as a bloon property in BTD5 onwards.

Don't use towers upgrades that can remove fortified, like Shattering Shells, as the bloons affected won't count to the achievement.Do note that ABR will provide random Bloons starting at Round 101+.Playing up to Round 100 actually has 5x the amount of Fortified Bloons one would get compared to Round 80.Playing on Alternate Bloons Rounds gives more Fortified Bloons than a regular Hard game, although it is only a slight 776 increase.Apopalypse is also a good mode to grind for this achievement because the Apopalypse rounds go past round 100 and there are more fortified bloons/ moabs.After Round 70 ends, All MOAB-Class Bloons become fortified. Both Normal and Elite Dreadbloon changes the rounds by adding Fortified to Leads and Ceramics in the early game.If a player defeats Elite Bloonarius during Round 140, this will provide them with about 31922 Fortfied Bloons in total. Both tiers will provide about 10412 Fortified Bloons.Tier 5 will spawn 4 Fortified B.A.D.s per skull. It will spew Regrow Fortified Ceramics while taking damage, and spawn Fortified D.D.T.s and B.A.D.s per skull. Elite Bloonarius the Inflator can spawn Fortified Bloons starting at Tier 4.As a bonus, this also gives a substantial amount of Experience. If a large surplus of Monkey Money is built up, replaying a Boss Challenge between 120 and 140 provides a lot of MOAB Class Bloons.See adjacent image for an example lategame defense. While this may not be the most time efficient method, it can be extremely useful as it allows you to do other things while your computer/phone runs in the background. However, if you set up an extremely powerful defense by the start of the randomized rounds (140), you can leave the game completely AFK and grind out anywhere from 0.5% to 1.5% by simply surviving until round ~250.It is not recommended to play extremely high rounds due to the sheer lag and unpredictable MOAB randomization players may face.See BTD6 Freeplay Mode/Strategies for strategies to obtain high Freeplay Rounds to pop Fortified Bloons. Grinding Freeplay Mode is a must, especially Rounds 101-140 where the Fortified pop count can reach as high as 21,510.This achievement is arguably one of the most tedious to obtain because of the small amount of Fortified Bloons in a casual game.Play high rounds and avoid towers and skills that remove fortification ( Ezili, Shattering Shells) or towers/abilities that instantly kill ( Ezili's MOAB Hex, Monkey Pirates, Navarch of the Seas) to advance progress of this achievement. Maximize popping power by brute-force popping as many Fortified Bloons as possible. The table below lists the Alternate Bloons Rounds up to Round 100 which contain fortified bloons.Īs such, the following table lists the expected pop count contributions to this achievement for each game mode if played to completion. This assumes there is no de-fortifying, no regrow, and excludes Golden Bloons. not Alternate Bloons Rounds or Apopalypse) up to Round 100 which contain fortified bloons, and the total amount contributed to this achievement from that round. The table below lists the normal bloon rounds (i.e.

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