What you need
- Map Room 2 and find an enemy's base (real enemy).
- At least 3 outposts, all with level 6 Housing (including 4 level 6 housing in your main yard).
- 7x540=3780=189 Ichis.
- A level 6 Drull with Bonus 3.
- Level 4 Catapult and Flinger.
- Fulfill all requirements
- Hatch the Ichis.
- Fling in all the Ichis
- Fling in the Bonus Drull
- Use 10m Putty Rage
- Watch the destruction.
- OPTIONAL: If you have more outposts, you may want to use the rest of the Housing to make more Ichis or Teratorns.
- Ichis hatch really fast at 1m 30s at level 6, so throwing a few of these bombs wouldn't require that much time.
- They target defense buildings and are the stronger version of Octo-bomb, so you could also send a last wave of different monsters to finish the base of once all the defense buildings are almost all destroyed.