Bathe in the lake with the queen

Avoid the sentries without ever dying

Avoid the sentries without dying in less than 5 minutes

Don't get killed by monsters

Disintegrate the first wave of enemies without ever dying

Disintegrate the second wave of enemies without ever dying

Disintegrate all enemies without ever dying

Disintegrate all rotten things while they sleep

Don't disintegrate any rotten thing while it sleeps

..

Don't get killed by the rotting hordes

Get kissed by the queen

Take the second bath with the queen

Get the Queen's ending