The Dual Frontline Battle System is Tides of Annihilation's signature combat mechanic. It allows Gwendolyn to summon, command, and merge with spectral knights during real-time combat. The system is the central differentiator between this game and other action titles in the genre.
How it works
Players can bring four spectral knights into battle, organized into two interchangeable pairs. Directional button inputs swap between pairs. Knights can be summoned at any point during combat, including mid-combo, allowing them to extend attack chains or cover defensive gaps.
Summoning
When summoned, a spectral knight materializes alongside Gwendolyn and fights semi-autonomously. Each knight has a unique combat style and elemental affinity. Confirmed elements include lightning (Sir Lamorak), fire (Palamedes), and ice (knight identity unconfirmed). Knights can imbue Gwendolyn's weapons with their elemental energy, adding elemental damage to her attacks.

Partnered State
Gwendolyn can absorb a spectral knight, merging into a single combat unit. In Partnered State:

Mobility is enhanced, with faster movement and new traversal options
Attacks become synchronized combos between Gwendolyn and the absorbed knight
The knight can parry powerful enemy attacks that Gwendolyn cannot block alone
Visual effects change to reflect the merged elemental affinity
Ranged knights
Some spectral knights specialize in ranged combat. They fire projectiles that can explode after a delay or create swirling domes of continuous damage. Combining ranged knights with Gwendolyn's melee creates opportunities for pincer tactics against groups.

Combat philosophy
The developers position the combat as Devil May Cry-inspired rather than Souls-like. The emphasis is on stylish, fast-paced action with deep combo systems. The game includes selectable difficulty modes for accessibility, and players can "stylishly execute" staggered enemies. The DMC influence shows in the combo counter, aerial juggles, and emphasis on variety over repetition.