Solid design work; it could easily be a base for an Armored Core kit. The mech has good balance and appears very mobile and functional. Enough armor to cover vitals but it still looks spry (again, an AC staple). Past the overall design, the details look thoughtful and well balanced as well. I could see this as an expandable kit as well; it has free hands for rifles, shields, or melee weapons, and it appears that you have left some nice sockets and shapes to add additional armor or systems on the back as well. I could see hiring out for this kind of high detail work in the future.
Various pictures of an Armored Core figure, this is quite impressive to see a piece of the game come into your hands as a handheld collection. Most Armor cores are neither nimble or extremely dangerous but this core focuses on nothing but pure firepower and defense meaning this is a core you can't take on alone. Even though it has one color still the way it's built and every piece is carefully detailed to provide collectors with the best quality possible in a figure, being dissolved into the world of Armor Core where picking the wrong parts or strategy can get you killed but congrats for the awesome collection.
Just throwing it out there that this is VERY close to the design for the Aliiyah-R from AC4answer. Like, to the point where copyright issues could ensue if you were marketing this on your own without their permission.
Otherwise, it's absolutely stunning and very well done.