Sentry Expert (Battles 2)

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For the upgrade in Bloons TD 6, see Sentry Expert (BTD6).
Sentry Expert
Portrait of Sentry Expert
Icon of Sentry ExpertSentries deploy with different damage types based on your need.
Tower Engineer Monkey — Path 1 — Tier 4
Cost $2,800

Sentry Expert is the Engineer Monkey's path 1 tier 4 upgrade in Bloons TD Battles 2. It produces four different types of Sentries that each have a different attack. It can spawn Crushing Sentries, Boom Sentries, Cold Sentries, and Energy Sentries, and it spawns them in that order by default, but it can prioritize or skip Sentries depending on what Bloons are currently on-screen.

When first upgraded to Sentry Expert, it instantly spawns four of these Sentries around its range.

Costs and sell values

Tiers Cost Sell value
4-0-0 $4,450 $3,115
4-1-0 $4,700 $3,290
4-2-0 $5,050 $3,535
4-0-1 $4,900 $3,430
4-0-2 $5,100 $3,570

Update history

For a complete list of Engineer Monkey changes, see Update history:Engineer Monkey (Battles 2).
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4-0-2
  •   Sentries can no longer stun Ceramics (bug fix)
Recently, we altered Overclock so that buffing a parent tower will also buff all of its child towers (eg sentries). Additionally, in this update we’re fixing a bug with this, meaning that newly spawned child towers will now correctly inherit the buff. With these changes, it makes Sentry Champion incredibly strong but only when buffed up a lot by the likes of Homeland Defense and Overclock. We have decided to change Engineer so that the spawn rate of its sentries can no longer be affected by attack rate buffs, but we have also greatly increased Sentry Champion’s regular damage so that it’s much stronger on its own now.
— Update notes
  •   Sentry: no longer affected by attack speed buffs
The Engineer has been languishing at the bottom of the “most used towers” list for a while. This change makes the sentry expert more useful immediately since it no longer needs to wait to generate its special sentry towers, and also opens up some interesting micro opportunities.
— Update notes
  •   Now immediately spawns 6 Sentries when the upgrade is purchased
We want Sentry Expert to have a big impact the moment you purchase it so feel it's important to keep the bonus sentries it spawns. 6 bonus sentries were proving to be too much extra damage however so we are dialing it back to 4 to make it a more measured response to a rush.
— Update notes
  •   Sentries spawned upon upgrading reduced ― 6 → 4
For more Engineer Monkey images, see Gallery:Engineer Monkey.

Screenshots

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Assets

In other languages

Language Name / Description Notes
Danish Sensorekspert
Sensormaskingeværer indsættes med forskellige skadetyper baseret på dine behov.
German Wachenexperte
Wachtürme werden mit verschiedenen Schadensarten eingesetzt – basierend auf deinen Bedürfnissen.
Spanish Centinela experto
Los centinelas se despliegan con diferentes tipos de daño según tu necesidad.
Finnish Vartioinnin asiantuntija
Vartiotykit käyttävät erilaisia vahinkotyyppejä tarpeidesi mukaan.
French Sentinelle experte
Les sentinelles sont déployées avec différents types de dégâts selon tes besoins.
Italian Sentinella esperta
Le sentinelle vengono schierate con diversi tipi di danno in base alle tue esigenze.
Japanese 見張りエキスパート
見張り番が、必要に応じて異なる種類のダメージを備えて展開する。
Korean 경비 전문가
필요에 따라 다른 공격 유형의 경비 포탑을 배치할 수 있습니다.
Dutch Wachtersexpert
Wachters worden op basis van jouw vereisten met verschillende soorten schades uitgerust.
Norwegian Tårnekspert
Soldater utplasseres med forskjellige skadetyper etter dine behov.
Portuguese (Brazil) Especialista em Torres
Sentinelas são montadas com diferentes tipos de dano de acordo com sua necessidade.
Russian Эксперт по турелям
Выставляются турели с различными видами урона, в зависимости от ваших потребностей.
Swedish Vakttornsexpert
Vaktkulsprutorna placeras ut med olika skadetyper, beroende på dina behov.
Turkish Gözcü Uzmanı
Gözcüler ihtiyacına göre farklı hasar türleriyle görevlidir.
Chinese (traditional) 岗哨專家
根據你的需要,哨兵部署不同的傷害類型。
Last updated: version 4.0.1