Sentry Expert (Battles 2): Difference between revisions
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{{for|the upgrade in [[Bloons TD 6]]|Sentry Expert (BTD6)}} | {{for|the upgrade in [[Bloons TD 6]]|Sentry Expert (BTD6)}} | ||
{{ | {{Stub}} | ||
{{BTDB2 upgrade info | {{BTDB2 upgrade info | ||
|id=Sentry Expert | |id=Sentry Expert | ||
| Line 12: | Line 12: | ||
|path =1 | |path =1 | ||
|tier =4 | |tier =4 | ||
|cost = | |cost =3250 | ||
}} | }} | ||
'''Sentry Expert''' is the [[Engineer Monkey (Battles 2)|Engineer Monkey]]'s path 1 tier 4 [[upgrade]] in ''[[Bloons TD Battles 2]]''. | '''Sentry Expert''' is the [[Engineer Monkey (Battles 2)|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. | |||
==Sentries== | |||
Usually, the Sentry Expert spawns Crushing, Boom, Cold, and Energy Sentries in that order. However, some sentries are skipped if certain Bloons appear on screen, and conversely some sentries are prioritized. | |||
Sentries get the following benefits from [[crosspath]]ing: | |||
*[[Larger Service Area (Battles 2)|Larger Service Area]] increases the Sentries' [[range]] by +4. | |||
*[[Deconstruction (Battles 2)|Deconstruction]] allows the Sentries to deal +1 damage to [[MOAB-Class Bloon (Battles 2)|MOAB-Class Bloon]]s and +1 damage to [[Fortified Bloon (Battles 2)|Fortified Bloon]]s (+2 in total to Fortified MOAB-Class). | |||
*[[Oversize Nails (Battles 2)|Oversize Nails]] increases the Sentries' [[pierce]] by 25% from the base amount, rounded up. | |||
*[[Pin (Battles 2)|Pin]] allows the Sentries to stun Bloons for 1 second (including the Cold Sentry). | |||
{|class="wikitable" | |||
!Type | |||
!Always prioritized against | |||
!Prioritized against | |||
!Skipped against | |||
!Always skipped against | |||
|- | |||
!Crushing Sentry | |||
|[[Ceramic Bloon (Battles 2)|Ceramic Bloon]]s | |||
|[[Black Bloon (Battles 2)|Black Bloon]]s, [[White Bloon (Battles 2)|White Bloon]]s | |||
|[[Lead Bloon (Battles 2)|Lead Bloon]] | |||
| | |||
|- | |||
!Boom Sentry | |||
| | |||
|[[Lead Bloon (Battles 2)|Lead Bloon]]s, [[White Bloon (Battles 2)|White Bloon]]s | |||
|[[Black Bloon (Battles 2)|Black Bloon]]s | |||
| | |||
|- | |||
!Cold Sentry | |||
| | |||
|[[Lead Bloon (Battles 2)|Lead Bloon]]s, [[Black Bloon (Battles 2)|Black Bloon]]s | |||
|[[White Bloon (Battles 2)|White Bloon]]s | |||
| | |||
|- | |||
!Energy Sentry | |||
| | |||
|[[Black Bloon (Battles 2)|Black Bloon]]s, [[White Bloon (Battles 2)|White Bloon]]s | |||
|[[Lead Bloon (Battles 2)|Lead Bloon]]s | |||
|[[Purple Bloon (Battles 2)|Purple Bloon]]s | |||
|} | |||
=== Crushing Sentry === | |||
[[File:BTDB2 sentry crushing portrait.png|right|90px]] | |||
The '''Crushing Sentry''' fires spiked balls every 1.1 seconds that can bounce off blockers, similarly to [[Spike-o-pult (Battles 2)|Spike-o-pult]]; however, they'll not rehit Bloons after bouncing off obstacles. Each spiked ball can pop up to 16 Bloons per shot (20 with [[Oversize Nails (Battles 2)|Oversize Nails]]). It deals 2 [[damage]], +1 to [[Ceramic Bloon (Battles 2)|Ceramic Bloon]]s, and have the {{BTDB2 dt|Sharp}} damage type (cannot pop [[Frozen]] Bloons or [[Lead Bloon (Battles 2)|Lead Bloon]]s). | |||
{{clear|right}} | |||
=== Boom Sentry === | |||
[[File:BTDB2 sentry boom portrait.png|right|90px]] | |||
The '''Boom Sentry''' fires bombs every 0.9 seconds that explode on contact. Its explosion has 18 radius, dealing 2 damage and can pop up to 30 Bloons (38 with [[Oversize Nails (Battles 2)|Oversize Nails]]). Explosions pop [[frozen]] Bloons and [[Lead Bloon (Battles 2)|Lead Bloons]], but not [[Black Bloon (Battles 2)|Black Bloons]]. | |||
{{clear|right}} | |||
=== Cold Sentry === | |||
[[File:BTDB2 sentry cold portrait.png|right|90px]] | |||
The '''Cold Sentry''' fires ice bombs every 1.5 seconds that explode on contact, similar to [[Cryo Cannon (Battles 2)|Cryo Cannon]]. Its explosion has 12 radius, dealing 1 damage and freezes up to 15 Bloons (19 with [[Oversize Nails (Battles 2)|Oversize Nails]]) for 1.5 seconds, and inflicts [[Permafrost (effect)|Permafrost]] (50% slowdown for infinite duration). Both the freeze and Permafrost effects soak up to 2 layers. It does not damage or freeze White Bloons, Lead Bloons, frozen Bloons, or [[MOAB-Class Bloon]]s, and will never target MOAB-class Bloons. | |||
{{clear|right}} | |||
=== Energy Sentry === | |||
[[File:BTDB2 sentry energy portrait.png|right|90px]] | |||
The '''Energy Sentry''' fires lasers every 0.57 seconds. It deals 2 damage, and can pop 8 bloons (10 with [[Oversize Nails (Battles 2)|Oversize Nails]]). It can damage frozen Bloons, but not Lead Bloons or Purple Bloons. Compared to other specialized sentries, its lasers have the fastest projectile speed (280 units/second), but still slower than the main nailgun. | |||
{{clear|right}} | |||
==Costs and sell values== | ==Costs and sell values== | ||
{{BTDB2 cost list by upgrade|Engineer Monkey|1|4}} | {{BTDB2 cost list by upgrade|Engineer Monkey|1|4}} | ||
==Strategy== | |||
{{BTDB2 last updated|4.13|section=y}} | |||
Sentry Expert is effective at acting reactively against Bloon rushes and early MOAB rushes, making it stand out between rounds 11-19. The specialized sentries are often enough to take down most rushes after the initial burst of sentry production, and Sentry Expert stabilizes with a full army of normally produced sentries by the end of the burst. However, against round 11, it can be a significant money investment for Engineer-based defenses to buy Sentry Expert for that round, due to needing to buy it and camo detection to compensate for the latter weakness. | |||
4-0-1 and 4-0-2 are generally preferred for the pierce bonus, as these upgrades allow the Sentry Expert to take down rushes more reliably. | |||
==Update history== | ==Update history== | ||
| Line 28: | Line 94: | ||
{{screenshot needed}} | {{screenshot needed}} | ||
=== | ===Assets=== | ||
<gallery> | <gallery> | ||
BTDB2 400_engineer_monkey.png|Portrait | BTDB2 400_engineer_monkey.png|Portrait | ||
Latest revision as of 08:53, 28 July 2026
For the upgrade in Bloons TD 6, see Sentry Expert (BTD6).
|
This article is a stub. You can help out by expanding it. The editor who added this notice did not specify a reason. |
Sentry Expert
|
 Sentries deploy with different damage types based on your need.
|
| Tower | Engineer Monkey — Path 1 — Tier 4 | |
|---|---|---|
| Cost | $3,250 | |
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.
Sentries
[edit | edit source]Usually, the Sentry Expert spawns Crushing, Boom, Cold, and Energy Sentries in that order. However, some sentries are skipped if certain Bloons appear on screen, and conversely some sentries are prioritized.
Sentries get the following benefits from crosspathing:
- Larger Service Area increases the Sentries' range by +4.
- Deconstruction allows the Sentries to deal +1 damage to MOAB-Class Bloons and +1 damage to Fortified Bloons (+2 in total to Fortified MOAB-Class).
- Oversize Nails increases the Sentries' pierce by 25% from the base amount, rounded up.
- Pin allows the Sentries to stun Bloons for 1 second (including the Cold Sentry).
| Type | Always prioritized against | Prioritized against | Skipped against | Always skipped against |
|---|---|---|---|---|
| Crushing Sentry | Ceramic Bloons | Black Bloons, White Bloons | Lead Bloon | |
| Boom Sentry | Lead Bloons, White Bloons | Black Bloons | ||
| Cold Sentry | Lead Bloons, Black Bloons | White Bloons | ||
| Energy Sentry | Black Bloons, White Bloons | Lead Bloons | Purple Bloons |
Crushing Sentry
[edit | edit source]
The Crushing Sentry fires spiked balls every 1.1 seconds that can bounce off blockers, similarly to Spike-o-pult; however, they'll not rehit Bloons after bouncing off obstacles. Each spiked ball can pop up to 16 Bloons per shot (20 with Oversize Nails). It deals 2 damage, +1 to Ceramic Bloons, and have the Sharp damage type (cannot pop Frozen Bloons or Lead Bloons).
Boom Sentry
[edit | edit source]
The Boom Sentry fires bombs every 0.9 seconds that explode on contact. Its explosion has 18 radius, dealing 2 damage and can pop up to 30 Bloons (38 with Oversize Nails). Explosions pop frozen Bloons and Lead Bloons, but not Black Bloons.
Cold Sentry
[edit | edit source]
The Cold Sentry fires ice bombs every 1.5 seconds that explode on contact, similar to Cryo Cannon. Its explosion has 12 radius, dealing 1 damage and freezes up to 15 Bloons (19 with Oversize Nails) for 1.5 seconds, and inflicts Permafrost (50% slowdown for infinite duration). Both the freeze and Permafrost effects soak up to 2 layers. It does not damage or freeze White Bloons, Lead Bloons, frozen Bloons, or MOAB-Class Bloons, and will never target MOAB-class Bloons.
Energy Sentry
[edit | edit source]
The Energy Sentry fires lasers every 0.57 seconds. It deals 2 damage, and can pop 8 bloons (10 with Oversize Nails). It can damage frozen Bloons, but not Lead Bloons or Purple Bloons. Compared to other specialized sentries, its lasers have the fastest projectile speed (280 units/second), but still slower than the main nailgun.
Costs and sell values
[edit | edit source]| Tiers | Cost | Sell value |
|---|---|---|
| 4-0-0 | $4,900 | $3,430 |
| 4-1-0 | $5,150 | $3,605 |
| 4-2-0 | $5,500 | $3,850 |
| 4-0-1 | $5,350 | $3,745 |
| 4-0-2 | $5,550 | $3,885 |
Strategy
[edit | edit source]This section was last updated for: version 4.13
Sentry Expert is effective at acting reactively against Bloon rushes and early MOAB rushes, making it stand out between rounds 11-19. The specialized sentries are often enough to take down most rushes after the initial burst of sentry production, and Sentry Expert stabilizes with a full army of normally produced sentries by the end of the burst. However, against round 11, it can be a significant money investment for Engineer-based defenses to buy Sentry Expert for that round, due to needing to buy it and camo detection to compensate for the latter weakness.
4-0-1 and 4-0-2 are generally preferred for the pierce bonus, as these upgrades allow the Sentry Expert to take down rushes more reliably.
Update history
[edit | edit source]For a complete list of Engineer Monkey changes, see Update history:Engineer Monkey (Battles 2).
|
This article or section uses Cargo to generate its content. It will automatically fill up as other articles are completed. To add to this section, create the articles it is looking up. Do not add content to this section manually and do not remove this notice until you are sure this section is complete. |
- 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
— 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
— 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
— Update notes
”
- Sentries spawned upon upgrading reduced ― 6 → 4
“
Sentry Expert is proving too cost-effective as a reactive response to a rush.
— Update notes
— Update notes
”
- Upgrade cost increased ― $2,800 → $3,250
Gallery
[edit | edit source]For more Engineer Monkey images, see Gallery:Engineer Monkey.
Screenshots
[edit | edit source]
|
This article or section needs more screenshots. See the screenshot guidelines for more information on what screenshots are needed and how to add them. |
Assets
[edit | edit source]-
Portrait -
Crushing Sentry portrait -
Boom Sentry portrait -
Energy Sentry portrait -
Cold Sentry portrait -
Upgrade icon
In other languages
[edit | edit source]| 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 | ||
Navigation
[edit | edit source]| Engineer Monkey in Bloons TD Battles 2 | ||||||
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