What are the secret achievements in Metro Last Light?

Write about Artyom's Diary pages. All of Artyom's Diary pages have been completed. There is a complete training sequence. Don't take a hit to finish the ASHES level. It's a good idea to kill 15 enemies. There is an opera called "Inferno." Set 2 enemies on fire. There is a car called theTesla. Break the lights. There is a person named Edison. Constantly vigilant. A businessman. The bank is walking. There is a musician.