| Tier | Information | Prerequisites |
|---|---|---|
| I | The standard Construct
|
5 
|
| II | Has +1500 HP. | Level 3 Headquarters 3  , 3  , 10
|
| III | Has +1500 HP; now gives +25 ASPD for the friendly unit on the Battlement. | Level 5 Headquarters 6 , 2  , 10 , 10
|
Battlement
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| “ | A very common defense construct. Place it high enough and Operators atop it will gain a sufficient advantage in combat. | ” |
| —Battlement description |
| “ | Defensive platform that allows one to look out for enemies and attack from high ground. Reinforced with Originium technology. Offers sufficient protection to allow those on it to retreat when attacked. | ” |
| —Firm Platform description |
The Battlement, known as Firm Platform in Fire Within the Sand, is a Construct in the Reclamation Algorithm game mode of Arknights.
Battlements allow ranged Operators to be deployed on top of them and is very valuable since most R.A. operations, particularly the Headquarters, have little, if any, ranged tiles to work with.
Tiers
| Tier | Information | Prerequisites |
|---|---|---|
| I | The standard Construct
|
2 , 5
|
| II | Has +1000 HP. | 2 , 5 , 10
|
| III | Has +1000 HP and +100 DEF. | 5 , 8 , 20
|
Stats
| HP | ATK | DEF | RES |
|---|---|---|---|
| 1500 | 0 | 200 | 0 |
| DP cost | Redeployment time | Block count | Attack interval |
| N/A | N/A | 1 | N/A |
| Addendum | |||
| The Battlement has an aggression level of -1. | |||
Skill
 |
Deploy Passive | |||
|---|---|---|---|---|
| Effect | 
|
|
| |
| When placed, allows Ranged Operators to be deployed on top | – | – | – | |
| HP | ATK | DEF | RES |
|---|---|---|---|
| 3000 | 0 | 200 | 0 |
| DP cost | Redeployment time | Block count | Attack interval |
| N/A | N/A | 1 | N/A |
| Addendum | |||
| The Battlement has an aggression level of -1. | |||
Skill
|
Deploy Passive | |||
|---|---|---|---|---|
| Effect |
|
|
| |
| More sturdy; when placed, allows Ranged Operators to be deployed on top | – | – | – | |
| HP | ATK | DEF | RES |
|---|---|---|---|
| 4500 | 0 | 200 | 0 |
| DP cost | Redeployment time | Block count | Attack interval |
| N/A | N/A | 1 | N/A |
| Addendum | |||
| The Battlement has an aggression level of -1. | |||
Skill
|
Deploy Passive | |||
|---|---|---|---|---|
| Effect |
|
|
| |
| More sturdy; when placed, allows Ranged Operators to be deployed on top, and increases their ASPD | – | – | – | |
| Addendum | ||||
| The Battlement increases the ASPD of the friendly unit on it by 25. | ||||
| Portable manmade tower, can be deployed in low areas | |||
| HP | ATK | DEF | RES |
|---|---|---|---|
| 3000 | 0 | 300 | 0 |
| DP cost | Redeployment time | Block count | Attack interval |
| N/A | N/A | 1 | N/A |
| Addendum | |||
| The Firm Platform has an aggression level of -1. | |||
Skill
 |
Build Tower Passive | |||
|---|---|---|---|---|
| Effect |
|
|
| |
| Lv. I: Fortification that ranged Operators can be deployed on. | – | – | – | |
| Portable manmade tower, can be deployed in low areas | |||
| HP | ATK | DEF | RES |
|---|---|---|---|
| 4000 | 0 | 300 | 0 |
| DP cost | Redeployment time | Block count | Attack interval |
| N/A | N/A | 1 | N/A |
| Addendum | |||
| The Firm Platform has an aggression level of -1. | |||
Skill
|
Build Tower Passive | |||
|---|---|---|---|---|
| Effect |
|
|
| |
| Lv. II: Reinforced fortification that ranged Operators can be deployed on. | – | – | – | |
| Portable manmade tower, can be deployed in low areas | |||
| HP | ATK | DEF | RES |
|---|---|---|---|
| 5000 | 0 | 400 | 0 |
| DP cost | Redeployment time | Block count | Attack interval |
| N/A | N/A | 1 | N/A |
| Addendum | |||
| The Firm Platform has an aggression level of -1. | |||
Skill
|
Build Tower Passive | |||
|---|---|---|---|---|
| Effect |
|
|
| |
| Lv. III: Heavily-reinforced fortification that ranged Operators can be deployed on. | – | – | – | |