Tiandao Research Center Upper Door

[Brawlatron]

Trying to get the last treasure I need in Tiandao Research Center, which I assume is behind this door at the top left of the zone, and I have no clue how to open it. Looking for any hints anyone can give.

I have already got the normal ending, do I just need to come back after triggering the point of no return?

[Brawlatron]

Post-no-return, got it, ty. Thankfully, I've already got the treasure you're describing and can help:

There's a flying enemy (the one with two daggers for hands that divebombs you) on the right side that respawns. And air parries refresh your double-jump. Just gotta time it so that it attacks after your double jump and then you can get up on the right side.

[Brawlatron]

Strange, couldn't find it anywhere... Guess I'll wait for a visual guide at some point lmao

[hydroxyl]

having the same issue. i got the treasure mentioned in this thread but can't open the door. Am probably missing something.

[Scorpix]

Door on top left are connected to side quest and they open after going through point of no return

[StonedWolf62]

The last one i didn't get there was a treasure under the Root Node in that area.
The one behind one of those mutated wall things.
You can get it also past the point of no return and you need to blow up one of the explosive enemies near the blocked wall to get it.