Enchantment Level Questions

So on wiki the guide shows enchantments for helmets, boots and gloves to have a required level of 66 or 75 http://pathofexile.gamepedia.com/List_of_helmet_enchantment_mods but what does that even mean?

1. Does it mean an item with an "item level" of 66 can only get a lv66 enchant but an item with item level 75+ can qualify for a possible lv75 enchantment?

2.Does it mean a player must be level 66+ or 75+ to get the specified enchantment?

3. Does this refer to the labyrinth level? Well, merciless lab tops at lv68 so I think this is not so

My bringer of rain helmet requires lv67 to equip but its item level is 68, does that mean it is impossible to get a lv75 enchantment (like dual strike 15% APS, 90% crit, or 40% damage)?

Someone please help me. I've run the labyrinth 100x on merciless and have not gotten anything good at all on the helm. I want help. I'm nearly ready to quit the game.

What I've heard is that the level 75 echantments are only available from the level 75 labyrinth which no one knows how to unlock yet

I believe developers do not intend for you to get desired helm enchantment without insane grinding, instead relying on trade for most players who want skill ups. I say this because over 300 helm enchants are available I believe. In that case what are the chances of getting a desires skill? Quite small if my estimates are correct

yeah I was afraid someone would say that. I've run the lab 100x and have not gotten even 1/9 usable enchantments in the 300 total. I can use hatred, dual strike, herald of ash, and arctic armor all of which have 2 lv66 enchants and 2 more lv75 enchants. Still no dice

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Umbra_the_Wolf wrote:

So on wiki the guide shows enchantments for helmets, boots and gloves to have a required level of 66 or 75 http://pathofexile.gamepedia.com/List_of_helmet_enchantment_mods but what does that even mean?

It means that every effect needs a level assigned.

Enchants granted in normal difficulty are tagged as level 32.
Enchants granted in cruel difficulty are tagged as level 53.
Enchants granted in merciless difficulty are tagged as level 66.

And finally, there's the fourth category, which currently cannot be achieved, that is tagged as level 75. Feel free to guess whether that's hinting at an upcoming 4th difficulty level, some other way to get to fight a "harder than merciless" labyrinth, or work in progress left there as a teaser.

So e.g. gloves go word(32), edict(53), decree(66), commandment(75).

that means for dual strike i can only get two (lv66) enchants at the moment?