Maybe you are right i'll change it ASAP, thank you for the feedback!
You seem to be my first "aficionado"
Anyways, i'm working on a restyle of the first two levels plus a third level, called Limbo.
The first thing i changed is that in the new Bloodfalls level, the locked way is instantly visible from the spawn point, so now the player is aware of the missing key since his first try.
In addition, i did a little restyle of the central part of the mountain: bricks instead of grey cement.
Here is the beginning of the level as it appears now.
Here it comes a little preview of the third level.
And yes, that column of saws is actually a big and fast stream of projectiles.