Note that the most damage Link can ever deal in a single hit is 3.
*Pol's Voice instantly dies to pots being thrown at it.
**Lots of enemies have a resistance to arrows, such as Wizzrobes (2 arrows to kill despite having 2 health) and Pol's Voices (4 arrows to kill despite having 4 health).
***The Boomerang is a weird case, where it will one-shot plenty of enemies while only doing 1 damage to others. Notably the only item that can kill Sparks.
Positioning an enemy on Link's left side (near his sword-hand when holding a spin charge) lets you hit it twice with one spin slash. This is useful for many boss quick-kills, such as on Genie and Ganon.