Conquests are just nuts I mean T10 rift in under 2 mins? How can you do something that takes 6 to 8 mins in 2? Even if you didn't have to kill anything simply running past all the enemies you need to kill to finish a rift would take about that long.
3 gems to 65 idk maybe I could do it. I have 3 at 45. Not sure what level GRifts are needed to get a gem to 65 but with a tiny bit better gear like a 2nd Unity maybe I could.
20 mins to kill all the games bosses seems impossible too.
GRift 75 well I haven't been able to get 2 Unity so until that happens i'm taking twice the damage but maybe just maybe if another Unity drops to add to me current one it'd be possible.
350 monsters in cursed chest event seems impossible because when you kill under 350 you complete the event so idk do enemies you drag across the zone to the chest count maybe?
T10 in 2minutes is quite easy. We did it within 8 hours of the season starting(so we were very low paragon and almost no gear).
3 Gems to 65 is also quite easy did that on 2nd day of season.
20m to kill all bosses... fuck that one you don't need to do it(granted its easy if you do it right order).
GR 75 was a joke. Did that solo first night before I went to bed(about 20 hours of play). Guess it depends what class you play, but all 4 of my group did it before we went to bed first night(barb, wd, monk and wiz).
Fuck the cursed chest one lol. Chest is just based on how fast you kill.