I really like this game! I played the tutorial and then played the new levels. The atmosphere of the game as a whole needs to be applaued! The new levels look especially nice. I like what you did with the lighting in it and the music especially on the first new level. Admittedly I did stop playign half way through the second part (the one with the glowy orbs that kill you) out of frustration, but I'm likely to come back to it. I'm specificallly refering to a moment where you have to jump and turn upside down and the go through  a long stretch without a checkpoint. I felt a little frustrated but that's not necessarily a bad thing, teaching through frustration is very valid and common in some of the best 2D platformers. 

I do have a couple bugs to report: first, after completing the tutorial and going down to the lowest area of the hub, Ithe game would consistently crash and give me this error message: 

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ERROR in

action number 1

of  Step Event2

for object o_entity:

Variable o_libraryDoor.arrowScale(100865, -2147483648) not set before reading it.

at gml_Object_o_entity_Step_2

############################################################################################

gml_Object_o_entity_Step_2 (line -1)

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I tested it twice and it happened both times the same way.

Overall I had a lot of fun! I really liked this game and I think it has a lot of potential! Keep it up!

- João G G L Borges