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UNDERTALE WIKI

Mettaton EX Peaceful Clear Tips

· Updated: October 10, 2026

Guides

Mettaton EX Peaceful Clear Tips focuses on the Hotland / CORE show boss for zero-EXP runs.

Goal

You need ratings high enough for the show to end on MERCY terms rather than a kill. Alphys’s phone upgrades during the fight are part of the puzzle — shoot the heart when prompted and play along with essay / pose / dance beats.

Practical tips

  • Keep healing food for long pattern strings.
  • Do not panic-FIGHT if you are on a Pacifist attempt.
  • Read on-screen instructions; this fight is theater logic as much as DPS.

After the fight

Continue toward New Home / Neutral finale, or backtrack for Pacifist letter flags if you already finished Neutral once.