Storyline: 8/10 Great. Not bad at all with continuing off the great ending.
Dialog: 6/10 Fair. This could really be improved upon. I just don't think you did the best job of capturing the characters' personalities.
Level Design: 6/10 Fair. It's pretty good throughout most of the levels. Near the beginning, the grass is too long, and it's difficult to see Quote.The kitchen, AAARGH! My eyes! You could have varied the tiles a bit more, and added a few more bells and whisltes, but I won't complain a ton. What really bring's this down is your guessing rom where you guess for traps. More detail later.
Gameplay: 5/10 Mediocre. Really, that death trap room is so hard, I gave up, and will not progress through this mod until you make it easier. It's completely unreasonable that you get not life capsules before that, making you die at one hit, needing to hit those "bats" about six times before they die, and them jumping out if you so much as jump is really frustrating. One problem common among mods is not having enough life capsules, and having too many enemies with too much hp. And that room is pretty much trial and error. Nice what you did with those shootable tiles. Did you use assembly for that?
Custom Music: 6/10 fair. The fastforwarded Cave Story and Safety were unnecessary, and felt like they were there just to be different. I would be better to just keep the original counterparts. But the fastforwarded mimiga town and pulse were good. That music in the death trap room could use some work. Adding more tracks to your song helps.
Glitches: I can't really find any, since I've not progressed that far.
Improvements:
1) Improve the dialog.
2) Redesign the background for the kitchen.
3) I see, Quote talks in this one. You know, that face picture for Quote is not that great. Here, use this face picture, courtesy of Jay City for making a 1x res version of the Quote facepic from CS+:
If you like, you can download the complete face .bmp with the face picture applied to it here:
http://www.mediafire.com/?qm4bn36d69qy99s
4) The level design with extra bells and whistles and varying the tile types could use a bit of work, as well as shortening the grass out side of your house.
5) During the cutscene where balrog drops down, he lands in front of you. It would be best if he landed behind you.
6) Not bad with the polar star 2.0, but it would be nice if the bullet sprites for all three of the levels had a new sprite, and if the did more damage than their 1.0 counterparts.
7) Either: Take the death trap level out, or include more life capsules along the way, increase the damage of the polar star 2.0, and lower the enemies hp in that room.