To hurt or heal, bold the row and change it. You can hurt and heal by two, and in this game, split your hurt or heal (e.g. hurt the Game & Watch and heal the Game Boy by one, hurt both, or heal both).
Game & Watch: 20
Game Boy: 20
Game Boy Pocket: 20
Game Boy Light: 20
Virtual Boy: 20
Game Boy Color: 20
Game Boy Advance: 20
Game Boy Advance SP (frontlit): 20
Game Boy Advance SP (backlit): 20
Game Boy Micro: 20
DS: 20
DS Lite: 20
DSi: 20
DSi XL: 20
3DS: 20
3DS XL: 20
2DS: 20
EDIT: That title formatting made me grimace.
Game & Watch: 20
Game Boy: 20
Game Boy Pocket: 20
Game Boy Light: 20
Virtual Boy: 20
Game Boy Color: 20
Game Boy Advance: 20
Game Boy Advance SP (frontlit): 20
Game Boy Advance SP (backlit): 20
Game Boy Micro: 20
DS: 20
DS Lite: 20
DSi: 20
DSi XL: 20
3DS: 20
3DS XL: 20
2DS: 20
EDIT: That title formatting made me grimace.