I like it, and the game was also fun. Although, my one critique would be that, even though you named the song after Portal, there are no lyrical, nor musical references to it.
The Norse Gods have Spoken...
...and they are proud.
It's alright. Yes, I give respect, and I've also made music with FL, so, I'm not ill-experienced. Lyrics could be a plus, but not necessary. It's a decent tune.
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