I really want the end armor rewards from Eureka but I feel it's overwhelming learning and grinding that zone. Maybe I should just start and do it slow and steady.
The weekly challenge log gives a bunch of exp and is a nice way to progress.
What I've learned:
1) Buy Eureka Armor from Kugane Pier #1 and a bunch of exp potions (I forget the name) from Market board.
2) Do your challenge log (kill 60 of each element, 30 night time enemies and 20 elementals) killing enemies 2 levels above you. You can google maps of locations. Once this is done it's up to you if you wanna solo chain 30 kills at a time for exp, or wait until next week.
3) Each zone has 2-3 Aetherytes you unlock as you level. If a FATE spawns in an area you unlocked or soneone in chat says there's an elemental (buffs you) in an area you unlocked, prioritise those. Don't go into areas you didn't unlock Aetheryte in yet.
4) Once everything is unlocked, join the NM train for the zone if there is one and look at the tracker people post from time to time to see which FATES are eligable to spawn next.
5) Each zone has a gimmick and a final boss, don't move onto the next zone without completing them, it's better to start the next zone overlevelled for it.
Anemos gimmick is magicite, put them all in one element and set it to offensive for whatever element you are fighting. End boss drops items you need to upgrade relic but the birdwatcher npc also sells the items for crystals. Anemos crystals can be traded for Protean Crystals.
Pagos gimmick is kill enemies to fill a progress bar, so this at the same time as levelling for fucks sake. Don't be like me and not finish Anemos so the Pagos gimmick isn't unlocked.
6) You must upgrade relic weapon to get the glowy armour. Relic weapon gets a cool glow at the end of the first zone, the glowy armour is in the 3rd zone (1st zone armour is different, ignore it) but only gets the glow in the 4th zone via upgrades
I belive that you only need to level 1 weapon in order to access ALL of the armor types.