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<span style="color:#323232;">Name omitted to respect privacy but if you really want to know they're easy to find on both Lalachievements and FFXIVcollect. Here's a picture of what this insanity includes:
</span><span style="color:#323232;">
</span><span style="color:#323232;"> Completed all five ultimate raids.
</span><span style="color:#323232;">
</span><span style="color:#323232;"> Cleared all three Deep Dungeons solo.
</span><span style="color:#323232;">
</span><span style="color:#323232;"> Discovered at least 20000 hoards from said Deep Dungeons.
</span><span style="color:#323232;">
</span><span style="color:#323232;"> At least 2000 successfully completed mentor roulettes.
</span><span style="color:#323232;">
</span><span style="color:#323232;"> At least 3000 victories in Frontline.
</span><span style="color:#323232;">
</span><span style="color:#323232;"> At least 1000 victories in Rival Wings.
</span><span style="color:#323232;">
</span><span style="color:#323232;"> At least 5000 victories in Crystalline Conflict or The Feast.
</span><span style="color:#323232;">
</span><span style="color:#323232;"> Completed every levequest achievement, which due to time-gating takes a minimum of SEVEN years.
</span><span style="color:#323232;">
</span><span style="color:#323232;"> Fully cleared all treasure dungeons at least 20 times, including the Hidden Canals of Uznair, which was a notoriously impossible achievement for many years and requires about 2000 Thief's Maps on average.
</span><span style="color:#323232;">
</span><span style="color:#323232;"> Obtained every single relic weapon from ARR to EW.
</span><span style="color:#323232;">
</span><span style="color:#323232;"> All extreme trials and final savage raid bosses from ARR to ShB cleared as BLU.
</span><span style="color:#323232;">
</span><span style="color:#323232;"> Killed at least 5000 rank S marks and at least 10000 rank A marks and obtained every Hunt mount.
</span><span style="color:#323232;">
</span><span style="color:#323232;"> All Firmament/Diadem achievements including 500,000 skyward score as every DoH/L for the Pteranodon mount.
</span><span style="color:#323232;">
</span><span style="color:#323232;"> Obtained all ocean fishing bonuses and caught every fish.
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Can confirm most of these are mind numbingly boring and mundane. I could barely get through the slog of ONE ARR and HW relic for starters. I’m also not ashamed to admit I’ve paid for bot programs to avoid doing a few of these tasks because of how tedious they can be. (Even just normally. I never went out of my way to try and complete any of these achievements.)