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KD's Comprehensive Co-op Aster Guide

Army Compositions

Army Compositions

  • Always keep 4–8 Griffins for healing and EMP; use 6 or more for non-Strider builds. Prioritize them to keep your forces alive.

  • Losing Units wastes the Veterancy Points they gained; Spamming Cheap Hexite Ones will result in less XP for the Army Core

Strider (Railgun) - Commando (Shredding Rounds) - Ironwing* Griffin (EMP) (Optional)

  • Dedicated DPS Composition

  • Works best from level 12 onward

  • Melts enemies and is especially effective against bosses

  • Slightly less effective against swarms

  • Rush one Strider and the Railgun; use Commando Reinforcements at every opportunity.

  • Work toward four or more Striders, then fill the remaining supply with more Commandos

  • Optional: Add Griffins for Healing; Necessity depends on how many Commandos you make

  • Optional: Add Ironwings after you secure 4 Fully-Staffed Striders

  • Recommended Composition against Depletion and Retribution Mutators

Excellent on: Iron Shield and Siege

Strider (Overwatch Refit) - Bastion - Ironwing* - Griffin (EMP)

  • Dedicated Anti-Ground Composition

  • Use Bastion Reinforcements; Swap to Ironwings later if needed

  • Prioritize at least one Strider over Griffins

  • Optional: Add Ironwings after 3-4 Striders of Bastions

  • Melts anything that doesn't fly

  • Recommended Composition against Horde, Extra Protection and Arkanid Infestation Mutators

Excellent on: Frozen Watch and Fabricators

Predator - Griffin (EMP) - Ironwing*

  • Dedicated Burst DPS Composition

  • Amazing Damage Output; Weak Anti-Air

  • Keep Predators on a separate control group for micro.

  • Avoid this composition against numerous enemy air units, such as on Under Fire, or against Grell enemy forces

  • For Best Performance: Jump Aster into the middle of your army, Rally, Charge Enemies, place mines once at the center of the enemy comp

  • Less effective during sustained combat, until Vet3

Excellent on: Scavenging and Critical Delivery

Titan (Drone Strike) - Griffin (EMP) - Ironwing*

  • Dedicated Anti-Air Composition

  • Easy to produce, but more APM-intensive to keep alive

  • Melt enemy Air units

  • Ineffective against Bosses and Heavy Targets

  • Vulnerable Crowd Control

  • Can sometimes be clunky to utilize due to Titan Target Selection

  • Due to Titan bulkiness, army losses effectiveness as its numbers increase

  • Optional: Add Ironwings after 18 Titans

Excellent on: Among the Remnants and Extraction

Commando (Eagle Tactics)* - Ironwing - Griffin (EMP)

  • Dedicated Air Composition

  • Not quite as powerful as other builds; Slower Ramp-up

  • Air-only composition permits cheesing missions

  • Poorer Anti-Objective Damage Output

  • Drastically empowered by Rally

  • Works Best with Stutter-Stepping

  • Skip Commandos if you don't have the micro / are facing heavy Crowd Control

  • Particularly effective against Grell due to their heavy Anti-Ground Crowd Control and lack of Anti-Air

Strider (Overwatch) - Sentinel - Commando (Eagle Tactics) - Griffin

  • Alternative Dedicated DPS Comp

  • Sentinels Ramp-up Slowly

  • Better Synergy than Railgun-Commando in regards to Eagle Tactics

  • Keeping one or two empty Striders later on can be useful; Garrison Commandos inside for safe-keeping

  • Expensive; Rely on getting Sentinels from Reinforcements, use resources on other units

  • Sentinel-Strider is basically a Railgun that doesn't need to set-up and does 5x the damage

Excellent on: Extraction and Among the Remnants

Strider (Overwatch) - Sentinel - Juggernaut - Griffin

  • Niche utility; Decent Performance

  • Alternate Sustain DPS build; Dedicated Anti-Heavy Build

  • Poor performance against Swarms and Horde Mutator

  • The equivalent of bringing a Honda Civic to a Formula 1 Race

  • Sentinels Ramp-up Slowly; Very satisfying at Vet3 However

  • Performance heavily depends on micro; Juggernauts require positioning, Sentinels require Target Prioritization

  • Expensive; Rely on getting Sentinels from Reinforcements, use resources on other units

  • Sentinel-Strider is basically a Railgun that doesn't need to set-up and does 5x the damage

  • Make as much use of Aster and Juggernauts for AoE as you can

  • Optional: Replace Juggernauts with Strider filled with Bastions

Excellent on: Extraction and Among the Remnants