Zombie Hunter/Level 4

First quarter
Shop item: Food 2, Food 4, Medicine 6.

First quarter
Shop item: Candle 8, Jar 2, Jar 3.
 * Also available at the 6th candle in the background.

Third quarter
Shop item: Crystal Staff 8, Medicine 2, Medicine 6.
 * Accessed from the candle in the background of Battle #17.

Fourth quarter
Shop item: Candle 6, Jar 2, Jar 4.
 * Found at #25.