I found that the best level for this achievement is Tunnels of Wadjet. The red potion bottles are easily visible as you proved through the level and you’ll likely take damage to warrant using the one in your possession.
Edit: rusty nail zh said that it’s possible to acquire this achievement in Horde mode. Sometimes you will see enemies holding these health potions, as I’ve seen them holding them in the Story mode. Just kill them and pick them up.