Really glad from it :-D

Thank you very much for the criticism.

For the chamber I've added in an up only teleporter, and replaced the single tornado boots with 2 tornado-boots spawners that wont get lavaed/blocked by gift boxes as easily.

As for the danger in moving, I added a single black platform for 4 of the pillars, 1 block below the pillar's height and on the side of the pillar that faces the middle, since jumps from a lower paltform to a higher platform are the most dangerous.

Like [GCN] Black Pillars, difficult to move, and even more difficult when using drills.
Or not harder, maybe just faster.

What I like about it, is how it replaces keys from previous map,
with terrain destruction.
Then lava gets into "prize" chamber, and another floor layer must be broken, which causes come items to get lost, but I'm fairly concerned about what duck's gonna do, when it gets there.

It can get easily trapped there. Would you maybe consider adding some escape routes?