Well while you can eaisly get all upgrades, it apparently is impossible to get all collectibles.
since for the bottom right most part, you need to stack a triple block tower.
but then second you try to move it, it gets stuck with some ground colision, shit cant be moved at all. probably 3 block weight too heav for the physics.
but you cant jsut first fill the first hole and jsut holler around a 2 block stack either cause some certain developer made it so the hole with bottom with a block on top wouöd have the block stick out a bit, so you cant move other blocks over it since its a few pixels too high.
So it is basically impossible :-(