Now presenting: The BASTION 13!
The Vanguards were successfully deployed to the front lines, but they lacked a certain element of defense. The enemy made quick work of them after switching to ranged armaments. The Bastion 13 has been designed to withstand heavy fire while dealing large amounts of damage at close range. The 13th War Effort may finally be turning.
Recommended to print at 0.15mm
This one took me quite a while, the chestpiece in particular was very difficult to make printable without supports. But now it should be ready for you all to just print! I printed all of mine at 0.15 height in PETG. The chestpiece comes by default with some internal supports to make it stay even as the sides are printing out, but you shouldn't need actual extra supports or anything. There's another version without the internal bits if you're feeling confident.
The extra shin frame is to hold the shin armor in place, like this:

changes 7/25: added hips, can't believe I forgot them the first time
The author remixed this model.
Modified nearly every armor piece for more bulk and a futuristic look.