Hey Francisco, the read I get from your portfolio at a glance is that it's trying to do a lot without doing any one thing really well. Characters AND Environments AND Vehicles that don't really reveal your strength. I want to talk about your Space Break scene specifically. You have what seems to be a fairly realistic…
Well, this is a considerably bad rig, and bad topology too. The joints are competing for the lack of vertices in the mesh. You should try retopoing it better.
Bad translation of a good article. There are two types of systems, this article talks about the bad system but makes it seem like it is the only system.