In the case of that first chest, it only meant that I should find three barely - hidden
glowing runes in the immediate vicinity of the chest and «solve» them in the only way Kratos knows how to solve something: By throwing his axe at it.
While calmer he does attack wraith with
glowing rune ax while a troll screams about sending Kratos to Valhalla.
Not exact matches
To get Idunn Apples, you will need to find the
glowing blue
rune chests that will be locked until you break 3
runes located near them.