We apologise for the delayed feedback:
I really like this game interpretation! Playing as a dungeon killing waves of enemies and keeping your old allies safe adds a nice flavor to the theme. You did an excellent job for your first game! I think having no repercussions for enemies getting through the traps is probably not the play, but I can understand if you ran out of time. One thing I noticed is that your volume setting does not pause the game when it pops up, which I would change. The ability to turn the FPS counter off would be nice as well. Overall, the game does run smoothly and well. I am curious where the music came from, as it is very nice. You should list it in your GDD to credit the artist, or show that you have the rights to use the music. The art you have done is really good! The cute blobs are easy to distinguish from each other and notice who is friend or foe; good shape and color language!
Your GDD has the most bare bones description of the mechanics, and the key bindings for them. A UI wireframe and some image examples of the art would not be remiss, along with more descriptive explanations of the art and music theme and how they fit with the game feel. I noticed that you finished this game in just 7 days, so I really am curious to see where you take this game going forward!