The main objective in Katana ZERO is to navigate through a series of challenging levels while defeating enemies and completing various missions, all while uncovering a deep narrative through in-game dialogues.

Time manipulation allows players to slow down time, giving them an advantage during combat and allowing for strategic planning. Players can use this ability to dodge attacks and plan their moves ahead.

Utilize the environment to your advantage, use stealth to avoid detection, and combine melee attacks with time manipulation for precise strikes. Experiment with different approaches to find what works best in each scenario.

Unlocking additional abilities involves progressing through the story. Players need to complete missions and engage in dialogue with characters to gain access to new skills. Pay attention to choices that may impact your abilities.

To utilize stealth effectively, players should take advantage of cover and avoid making noise. Use shadows to remain unseen and time your movements to evade enemy patrols. Enemies can be taken out silently when they're unaware.