The player's damage is altered through a Damage Percentage Modifier indicated underneath Benedict's health bar. Most of the time, the player's damaged will be significantly reduced. However, there will be periods of time where players can deal 200% damage. Thus, players should focus on survival until the Damage Amplification Window begins, before they start focusing on dealing damage.
Benedict has 3 phases. As a result, players should prepare for a long battle and ensure that they have enough HP to last them through the 3 phases.