Turns out that the main part of a good puzzle game and not just a Block-Pushing one is not the mechanics, the level design, the originality or even the sprite art. It was actually, since December 23th 2023, one incredible game feature :

B U L L E T H E A V E N G A M E P L A Y L O O P

Basically, all we have to do is to implement an endless wave of bullets filling up the entire screen and trying to destroy the player. It’s just that easy ! Now due to this, it will be considered as a boss level, which means no undo or manual checkpoints allowed. But the key repeat interval has been lowered so that you can have more control over your player ! So prepare yourself for a bullet rampage survival and get the crate past the checkpoints in his path to the target !