When I was a kid I played a game, but it became lost media, so it was some sort of fighting game from a side view, and you and the other player would play as rusted robots/mannequins/crash test dummies(?) and both of them would fight in a dark sewer, and it was ALSO rusty, and there was a platform that would hold both the players (look at my horrible drawing for reference) and the main goal was to either (a) push the other player or (b) kill them. I played this game ONE TIME only when I was young, so Im not sure if it even existed. It was pretty realistic (ps3-ps4 graphics).
The gameplay was, from what I remember, pulling the limbs of the mannequin/robot/crash test dummy your playing as, and they had joints. There was also weapons (I think) like a pole axe or something. The gameplay was a little janky, but kinda fun. This game was either in crazygames.com or twoplayergames.org . Hope someone can find this. Oh, and I think it was a a game in 3d made in blender or a flash game, but it was 3d and realistic.