Save to receive the “Chosen of Cthulhu” achievement.

Last save right before the final boss hit in the final level. Everything has been completed without dying and the save achievement has not yet been received.

Just unpack the downloaded file into the "My Documents/My Games/Magrunner" folder, restart the game and click "Continue".

Actions in the game:

There you need to wait until the boss gets up and shoot a bomb at him. Then climb up the overturning platform and shoot red at the near tower and green at the far one. The game will end here and you will receive an achievement.

If you suddenly die, exit the game, unzip the file again and start the game again.

Good luck in getting the achievement! :)