This is a robot based off a robot in War Robots. The legs glue to the "dots" on each side of the body. The gun(s) can go on the top or the sides. The size may not be what you want. You can adjust it to whatever size you like.
I use the monoprice mini 3-d printer. My splicing software is called Cura. I print it in pla at 190°c. Layer height is .1mm for fine details or .2mm if you need speed. Infill is 20% at lowest. Supports for the body piece is recommended. If you have a heated bed you can use it if you want to. It shouldn't make much of a difference with this print.