Get an S rank on every level of Chasm difficulty in Raid Mode.

Understand S Rank Requirements: Each Raid Mode stage has specific criteria for achieving an S rank, typically involving time completion, enemy defeat count, and damage taken. Consult in-game mission logs or online guides for precise requirements per stage.

Optimize Your Character: Choose characters with skills that complement your playstyle and the specific challenges of Chasm difficulty. Characters like HUNK or Wesker often excel due to their high damage output and survivability.

Weapon Selection: Equip weapons with high damage, critical hit bonuses, and relevant skills such as 'Long Magazine' or 'Auto Loader'. Consider elemental damage types if certain enemies are weak to them.

Skill Management: Invest in powerful skills for your character and weapons. Skills that increase damage, reload speed, or provide defensive buffs are crucial for high-difficulty content.

Stage Mastery: Learn the layout of each Chasm stage, enemy spawn points, and optimal routes. Practice each level repeatedly to improve your speed and efficiency.

Enemy Prioritization: Identify and eliminate high-threat enemies quickly. Bosses and special enemies often require specific strategies or weapon types to defeat efficiently.

Resource Management: Conserve ammo and health items where possible, especially during initial attempts. Learn which enemies can be bypassed or defeated with melee attacks to save resources.

Teamwork (if applicable): If playing co-op, coordinate with your partner on roles, target prioritization, and resource sharing. Effective communication is key to success.

Persistence: Chasm difficulty is unforgiving. Expect to fail multiple times. Analyze your mistakes, adjust your strategy, and keep trying until you achieve the S rank.