Beating Under Chompers in Paper Mario: Sticker Star – Hammer Strategy

Under Chomper (World 3-10 boss) charges and spits spinning projectiles. Its weakness: Hammer stickers.

Core Strategy

1. Stock Hammer stickers—Super Hammer, Ultra Hammer, or Shiny Hammer ideal. Buy from Decalburg shop if low.
2. Dodge the charge: Jump just as it lunges; the shockwave passes under.
3. Sidestep projectiles: Move laterally; they track loosely.
4. Spam Hammers: 3-4 Super Hammers finish it. Use Thing stickers (Fan, Scissors) only if Hammers run out.

Advanced Tips

• Heart stickers before battle → max HP buffer.
• Environment: Throw background objects (baubles, crates) for free damage.
• Spin Sticker → Hammer combo: Spin knocks it back, Hammer follows up.
• Learn the rhythm: Charge → projectiles → pause. Predict, don't react.

Persistence + Hammer stickers = victory. The sticker system rewards preparation.