The collaboration between Arknights and Delicious in Dungeon brings two unique operators to the game: Laios and Marcille. Understanding their skills, playstyles, and deployment strategies can significantly enhance your gameplay experience. Both characters are available through the Crossover Limited Headhunting banner, requiring players to navigate the gacha system to unlock them. Once obtained, maximizing their potential is key, which is why we've put together this comprehensive guide.
Laios: The Curious and Calculated Frontliner
Laios, a 5-star melee unit from the Dreadnought Guard branch, excels in single-target offense. His unique kit rewards players who pay close attention to enemy types and leverage repeated spawns. Unlike units you can simply deploy in any fight, Laios is designed for players who plan ahead and understand his specific mechanics.

Skills and Combat Use
Laios's skills are tailored for players who appreciate strategic depth:
- Curious Strike: A skill that increases damage against specific enemy types, making it crucial to identify and target these enemies effectively.
- Calculated Assault: This skill boosts his attack power after consecutive hits on the same target, ideal for dealing with high-health enemies.
- Party Leader: Enhances the performance of Laios's Party members, providing a team-wide buff that increases attack speed and defense when four or more members are deployed.
Deploying Laios effectively requires understanding the enemy composition and timing his skills to maximize their impact. He thrives in scenarios where you can predict enemy movements and capitalize on his strengths.
Marcille: The Versatile Mage
Marcille, a 5-star caster, brings versatility to your team with her mana-based skills. Her gameplay revolves around managing her mana to unleash powerful effects at critical moments.
Skills and Combat Use
Each of Marcille's skills offers unique utility and damage profiles:
- A Top Student’s Abilities: A burst skill that enhances her attack when enemies are nearby, or heals allies when they're not. It's perfect for mixed-role scenarios.
- Summon Familiar: Creates a companion that boosts her basic attacks and adds slow effects. Re-activating it enhances the familiar, increasing her range and adding a stun effect, making it ideal for crowd control and stalling tactics.
- Explosion Magic: A high-mana skill that, after chanting, causes a massive AoE explosion with a stun effect. Continued chanting and additional mana turn it into a multi-hit attack, clearing groups of enemies quickly. It's perfect for high-pressure stages.
Marcille's gameplay loop involves deploying her during key wave moments, using her skills effectively, and then retreating her to build mana again. This cycle rewards good timing and planning, especially when paired with SP-focused supports or delay tactics.
Building and Synergy
Marcille's potential is fully realized at Elite 2, where she gains more starting mana and team-wide buffs when running a crossover-themed squad. For skill priority, Summon Familiar offers flexibility and utility across various stages, while Explosion Magic is ideal for when you need a massive burst.
Recommended Development Path:
- Promotion Priority: Elite 2 for mana scaling and support synergy.
- Skill Upgrade Focus: Summon Familiar for utility; Explosion Magic for burst.
- Best Potentials: ATK increase and redeployment time reduction.
Marcille synergizes well with operators who can protect her during chants or indirectly boost her SP. She pairs excellently with Laios and other Laios's Party units to leverage the team buff, and also fits into caster-focused compositions where both damage and control are needed.
Laios and Marcille add a fresh and engaging dynamic to Arknights, offering gameplay that rewards precision, tactical placement, and mana management. Together, they form a versatile core capable of tackling both single-target and AoE challenges.
If you're interested in exploring new team builds, especially those centered around the Laios's Party tag, both units offer strong synergy potential. For the smoothest gameplay experience, particularly during intense missions, consider playing Arknights on PC with BlueStacks. This setup provides better controls, larger visuals, and uninterrupted gameplay, ensuring every move counts.