With the amount of waiting and the unforgiving nature of the game, it desperately requires checkpoints. Ended up giving up on lvl 3 mainly due to having to replay the entire game to get another try. Appreciate the inclusion of an intro cutscene!
It does have checkpoints; where there’s a leak and a green diamond symbol that means that water source is a save point (and a practically infinite source of water) and you can press S or the down arrow key to save there. There is one on the left side of the second room.
