Siege

**Siege** is an attack sector on Erekir and the first sector there that has an extreme threat level. It is an introduction to Cyanogen and the production of the Vanquish, a tier 4 unit that is needed to reach the final Core.

## Description

As the description states, the sector is divided into two parallel chasms without any connection, meaning that you must rely on payload transport systems to exchange resources. The right chasm is where all the Arkycite is located on this sector. Low-level enemy units spawn frequently until the first two cores are destroyed. At the end of the twin tunnels is a base with Reinforced Surge Walls and a Scathe, while the base immediately under also has one that extends into the first Malis structures. Scathe missiles can be shot down to detonate them early and protect your Units. This base is also the only point that connects both tunnels. The Ship Refabricator is banned in this sector, likely because air units are not targetable by the Scathe and thus can cheese the sector.

You will have 10 minutes to prepare initial defenses before enemies start spawning. Enemy production will constantly escalate, with Anthicus being produced 26 minutes and 40 seconds after the end of the defending phase.

The enemy citadel located at the very back of map.The lower left base of the enemy that holds the first bastion.The upper left enemy base the houses the second bastion.The left lower enemy base.The upper right enemy base that houses the third bastion and their powergrid.
### Structured Events

Objective-editor events occur in the following order:

 u1
 u2
 u3

## Strategy

Much like how there are two chasms in this map, there are two ways to go about attacking this map: playing it normally by transitioning into higher tier units over time or by using the starting Carbide to rush Vanquish production. In both methods, sending units on the right to destroy the enemy Arkycite supply lines will cripple the bases on the left and weaken their production.

When playing it normally, finding a way to deal with the Scathe missile is important, requiring a bulky, hard-hitting unit that can be built in the absence of thorium deposits. The Locus is the best unit for the job here, as a full group of 15 will shoot down the missile as it approaches and minimize the damage it deals. Cleroi are to be avoided due to their high build time and low health, being in two-shot range with poor anti-missile abilities. The easiest way to destroy the first core is to use one unit as a distraction for the Titan and Scathe while the rest focus on the core Once you destroy the first core and get thorium, upgrade to the Precept; while it is an odd choice usually it soaks up missile damage well and shields any Anthicus you may build. Getting the Tank Assembler to build Vanquishes is also a good strategy as they are even bulkier and can hold off enemy waves in a pinch, although they can't deal with missiles as effectively.

The intended and faster way is to first enter the sector and research both the Tank Assembler and Cyanogen Synthesizer, which may take multiple launches and abandons depending on how much carbide you have already. As you are limited to a single Core: Bastion in Crevice, produce carbide in Stronghold to speed this process up significantly - perhaps enough to research both these blocks without need of abandoning. When launching with the research completed, your starting carbide loadout supports both with 100 remaining and do not require either it or thorium to produce Tier 4 tanks. This lets you get them without even capturing a core.

From then, it is a matter of leading your tanks well; there are numerous instances where Vanquish's bad mobility can lead it to be stuck in slag pools and potentially drown. Lone tanks can cross these slag lakes easily, so set your Tank Assembler's waypoint to areas past natural obstacles. While inside bases, make sure to stay a safe distance from Sublimates, which easily cause the greatest damage to your tanks. The second greatest threat is the Scathes, which can knock out around a tenth of a Vanquish's health in one missile - this can be the difference between life and death, so separate your tanks as much as possible to minimize the damage taken. To account for the presence of enemy units and Afflicts, don't attack the small bases with less than ten tanks, and the big base at the end with less than twenty.

Whichever way you play this map, with the rather early threat of Anthicus, it is wise to obtain Surge Alloy early to defend bases with Afflict, as they are excellent at stopping missiles. If needed, you can attack bases with Afflict, but be mindful of your power/slag, whichever is being used to heat the Afflict.

Being unable to use air units, load any spare Ozone into Reinforced Liquid Containers to break into enemy bases quickly.

## Trivia

* Siege was introduced in build 140 of the v7 beta.
* Siege was made by contributor hhh i 17. Initially, it was at the tech level of Surge Alloy before being changed to post-Carbide after Ravine was accepted during the first map submission.
	+ Anuken and contributor Epowerj edited the sector to change the tech level.
* Curiously, while Ship Refabricators are banned on this sector, Ship Assemblers are not, which means it is possible to build Quells here despite the restriction on air units. However, the technology to unlock Ship Assemblers in the Erekir campaign is not available until Siege has already been cleared, and Disrupts are still effectively banned due to the inability to build Averts.