aka Dunyayi Kutaram Adam; aka The Man Who Saved the World, aka The Super Adam Who Saved Earth, aka Turkish Lionman; aka Space Hero Lion Man
How bad is it? It's recycled footage with an incomprehensible plot and no budget.
Should you see it? If you can find a copy that's subtitled or dubbed.
There was (perhaps still is) a Turkish film underground that remade American films for release in Turkey. My favorite is Deathless Devil, but this is the best-known, never released under the title for which it's remembered. Making a special effects movie without money required lifting parts of other films wholesale, particularly Star Wars, though the music (hero's theme) from Raiders of the Lost Ark is used a lot as well. The plot: After a long battle in space, a ship crashes in a desert. Trying to attract women, they attract skeletons on horses and they get caught and forced to become gladiators. They escape to a cave, are discovered, fight monsters, capture a golden brain and sword, make magical boots and gloves with which he fights the evil wizard (cutting him in half) and returns to earth. At least, I think that's what happens, as I watched the whole thing in Turkish. Most of the fun is seeing how much of the film is stolen - it must be in copyright limbo.