There's really nothing I can say about this beyond what appears in the video.
Freedom Fighters appears to be a *very* basic clone of Defender, lacking any ground level, scanner, teleport or smart bombs, or any obvious objective beyond "pick up the humanoids (purple squares) and kill everything else ".
This and the other retro gaming clips on this site aren't intended as full game reviews, but are simply to give viewers who weren't around when these games were popular, an idea of what video games used to be like.