Witches' sabbath escape

Every year witches gather on the witches' sabbath. This year me and my sisters-witches arrived here too. And as usual, not everything went smoothly. My sisters have fallen out with the local monsters. And the monsters locked them at the cemetery!
Solve all riddles and help them to escape! Save my sisters!

Based on the story by Frank Stockton 'The Lady, or the Tiger?'

The game consists of riddles. You must guess who is in every box. There can be witch or monster in every box, or it can be empty. There is a plate on every box, which tells you, who is in boxes. There can be truth or lies on every box. The inscription also specifies the composition of characters, for example: "there is a witch in one of the boxes, the monster in another, and the third box is empty".
The riddles are solved in several ways (algebraically, diagram method), but it is more convenient to solve the riddles in mind by means of reasoning. For example, "we assume that there is a witch in the left box, then ..." or "let's say that there is truth on the right label, then..."
There are 7 types of riddles in the game. They differ in the type of additional conditions, the number of doors, and the composition of characters.
In some riddles there can be monsters in all boxes or witches in all boxes. The main thing is to choose correctly.
All riddles are solved uniquely.

Calculation of score is as follows:
100 points for the first level, 200 for the second and so on.
For the first minute after the start of the level is given a bonus of 100%, which uniformly decreases every second and hence equals to zero from the second minute.
If you use help, the points earned for that level are halved.