Hi :) yes i made the majority of the art assets
The main charactares was created with my with a middleware.
The monsters are original too but were created with blender.
All the geometrical assets (the ship, corridors, rooms, and other stuff like the servers) are mine too.
Only a subset of assets (furniture, chairs and other stuff) aren't mine, but only for a time issue. I wanted to create all the 3D geometry for this game but the time was not kind so i had to use some creative commons stuff.
Textures in general are not mine, i used pre generated PBR textures but only because i have not buyed Substance Designer yet. I use only what i can afford to use in order to create my games...
Happy you liked it :)