Each of the 6 dungeon bosses awards a health cicada when defeated. There are an additional 4 health cicadas hidden behind Card Gates. This makes a total of 10 health upgrades, which combined with your starting 6 health, results in a maximum health of 16 in two rows of 8.
- In the Seeing One Dungeon after defeating Seer.
- In the Woods behind the 04 Card Gate.
- In the Mountain Cave after defeating the Wall.
- On the Beach behind the 08 Card Gate.
- In the Red Cave after defeating Rogue.
- In Young Town behind the 16 Card Gate.
- In the Apartment after defeating the Watcher.
- In the Hotel after defeating the Manager.
- In the Underground Labyrinth behind the 24 Card Gate.
- In the Circus after defeating the Servants.
Sometimes, you must "catch" the cicada. If you miss it, it will fly away, and you will need to leave and re-enter the room to try again.