The game is in Russian, I followed Adam's guide to put it in English

http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=849701741

 1. Save 1
 2. Go down to Ulyana
 3. Save 2
 4. Stay and launch the fireworks
                   5. After you have won the achievement, close the game and open it again

 1. Load Save 2
 2. Go get a warm
 3. After you have won the achievement, close the game and open it again

 1. Load Save 1
 2. Drop down the firecrackers from the window
 3. Stay
 4. After you have won the achievement, close the game and open it again

 1. Drop down the firecrackers from the window
 2. Come
 3. Save 3
 4. Look at Slavya
                   5. After you have won the achievement, close the game and open it again

 1. Load Save 3
 2. Look at Lena
 

 1.You will receive this achievement after completing the 5 above