Yeah All sprites are made by us and some images have references. In terms of the character only have face, first reason is not we want to ignore the leg and hand which can decrease our character animation. The second reason is that we spend so much time on graphics. The order of the character is lowest which caused we did not have enough time to design it.
Your comments are real treasure for us and each words are the truly great advice for your game. Some problems are happened and We ware not realized. We are willing and going to fix and update later to make the game better. BTW, I am going to enjoy & rate your game now~