It's an okay story - not grand but there are worse films out there to watch. This one is entertaining in a strange way. It is what it is: a medieval fantasy meets a space alien who becomes a "Star Knight".
Only one major flaw: The breathing. The alien could not breathe Earth's atmosphere so has to wear his armor to breathe but there is a point at the end where Klever ends up in the outfit - how is he breathing in it if the space suit has air the alien can breathe in? Also Fray Lupo ends up in the space ship without a space suit to breathe in - yet he's breathing just fine. -- Maybe the space suit and space ship adjusts so the person in it can breathe?
Overall - really corny fun! I enjoyed it in a strange sorta way.