One of the best slashers ever made, in my opinion :)
Old-school horror movie: teens get slaughter at "Camp Crystal Lake"! Not as good as "Helloween" or "Nightmare on Elmstreet" but nice anyway.
Nothing original in the setting (don't expect it to be.) Not one good character (dont care if they die.) Not even fun (it's a predictable one by one kill with boring filler scenes.) Not even scary (maybe to kids in the 80s) Atmosphere? A little but even that's a psycho music rip off with added cha cha cha. Also Crazy Ralph... I love ridiculous but he's straight out of a pantomime. Is he supposed to be the character you think may be the killer earlier on? He couldn't catch a fly. Mrs Voorhees is just ridiculous although the most entertaining, which is sad. Some effects and deaths were OK. The whole horror story behind Jason is ineffective.
Even by slasher standards it's mediocre. Gives horror a bad reputation
Its thoroughly predictable and sometimes haphazard, but also surprisingly atmospheric and fun.