Assassinate MOAB ability: Special missile flies out and does massive damage to MOAB-Class Bloons. Regular attack range and MOAB-class damage also increased.
~ BTD6 Description
MOAB Assassin (sometimes shortened to Assassin) is the fourth upgrade of Path 2 for the Bomb Shooter in BTD6. It is a returning upgrade from BTD5, granting a new ability that fires a missile dealing 750 damage to the strongest non-camo MOAB-class bloon on screen and creates a 3 damage explosion with 100 pierce when the missile explodes, with a cooldown of 30 seconds. Alongside its new ability, it now shoots missiles that deal +30 damage to MOAB-class bloons (instead of +18) and +4 damage to ceramics (instead of +3), while still dealing 1 damage to all other non-black bloons. Additionally, MOAB Assassin adds bonus range on top of the MOAB Mauler upgrade, which in itself has extra range on top of Missile Launcher.
MOAB Assassin is most commonly seen used in tandem with Striker Jones against rounds with spaced and isolated MOABs, especially Round 100, or sometimes against early isolated MOABs such as the Round 40 MOAB layer or the Round 40 Fortified MOAB layer. Pair with Striker Jones for the opportunity to reset cooldowns for the MOAB Assassin abilities and double damage on the second activation at level 20. With Striker Jones' Artillery Command, MOAB Assassin is very efficient DPS ignoring grouped damage.
In terms of using MOAB Assassin as a damage tower, MOAB Maulers tend to be more efficient in terms of grouped popping power as they are more spammable, especially with Primary Mentoring.
Most strategies for utilizing MOAB Assassin's main missile attacks can be utilized based on that for the previous tier MOAB Mauler. As such, 1-4-0 tends to be the preferred crosspath for the increased pierce and blast radius.
Striker Jones and Top Path Villages are great buffs, as they not only buff MOAB Assassin itself, but also synergise with other towers that are great MOAB Assassin partners.
Overall, the MOAB Assassin has been buffed since it was first introduced into the game. Unlike MOAB Maulers, the power of MOAB Assassins hasn't been amplified to the same extent, but rather it has evolved to become a stronger version of a MOAB Mauler with an activated ability that deals high damage to high-HP single-target blimps. It isn't as popular as Maulers, but tags alongside Striker Jones + Mauler spam strategies to utilize Striker Jones' lesser used Artillery Command ability.
Initial release (compared to BTD5)
MOAB Assassin ability can no longer attack camo bloons without camo detection.
MOAB Assassin ability can no longer be activated when no MOAB-Class bloons are on screen. While this is technically a decrease in power, it can actually be advantageous. This is because it prevents the ability from being accidentally wasted.
MOAB Assassin ability now has increased damage (700 → 750)
MOAB Assassin missile now deals more damage to MOAB-class bloons (11 → 16)
MOAB Assassin now has increased attack speed from the Missile Launcher upgrade (every 1.2s → 1.02s)
MOAB Assassin main attack now deals +5 damage to Ceramics
Base MOAB Assassin range increased from 44 to 54
MOAB Assassin main attack deals more damage to MOAB-class (16 → 19)
MOAB Assassin attacks faster (1.02s → 0.9s)
MOAB Assassin deals more MOAB-class damage (+18 → +25)
MOAB Assassin deals less Ceramic damage (+5 → +4)
Base MOAB Assassin pierce reduced from 18 to 14 and benefits less from the Bigger Bombs crosspath (28 → 20)
2-4-0 MOAB Assassin deals more pierce (28 → 30)
MOAB Assassin deals more damage versus MOAB-class (+25 → +30)
Indirect buff due to a nerf in MOAB Mauler ceramic bonus damage being reduced from +4 to +3 not applying to MOAB Assassin.
MOAB Assassin's ability missile uses exactly the same sprite as the normal MOAB Assassin attack missile. The same applies to MOAB Eliminator.
A 0-4-0 MOAB Assassin is the cheapest tower to be able to be affected by Striker Jones' Artillery Command ability before he reaches Level 20. In the opposite side of the spectrum, a 2-0-5 Bomb Blitz is the most expensive tower under the same conditions, the second being 2-5-0 Pop and Awe if excluding all possible Bomb Blitz crosspaths.