While I normally like your battle descriptions, in this case the extra syllables in Argentina and Argentine threw me for a loop. Would that be how the Brits pronounce it?

WHAT THE F&^@*$ IS WRONG WITH "EPOCH"!?

It makes me feel like I'm watching Nyan cat again

Overall I'd say the puzzles were not too hard but did take a little thinking for the later levels, the graphic were nice and the music was very cool.

I ran into a glitch in a level with portals (I think it was level 22): I used Undo a few times to backtrack and then realized a few backtracks wouldn't be enough so I tried to reset the level, but the level ended up not completely resetting to its true initial state (something more like how it was when I went through the last portal), and after continuing to try to futz with it I just ended up in a completely softlocked state where neither the undo or reset buttons were getting the level to a playable position anymore. Fortunately reloading the page let me continue at the same level and finish it.

Is level 11 bugged? I'm pretty sure I filled everything and it's not registering as finished. It was enjoyable up to that point.

I really like what I see so far. The safe is not accepting the code that I'm 99% sure is correct and that might be making it impossible to progress further.

I'd recommend not to make Ctrl be crouch and W be move forward for a web game :p

Aside from that issue, the easiest suggestion I have to implement for now would be to have a screen that says "Loading" during transitions between scenes instead of just a gray window that makes it look like the game might have gotten frozen.

Disclaimer: I admit IDK squat about dubstep. That said, my main critique is that this sounds like a series of great hooks that are done sequentially but without seeming like they're really part of a cohesive song. Maybe this upload is meant to be just that, and more of a teaser than a typical song, but I think it'd be a lot more memorable if it had like a chorus or something that I could point to and say "ah, that's the part that people will recognize as being this song". That said, these are great hooks and could probably be fairly easily turned into such a song if you wanted.

I'm blown away by the effect those bells created and I've lost count of how many times this has looped by now. Nice job, man.

I really like the ambient background effects. At 0:45 the lead keyboard switches from its intro to playing a melody of all whole notes; I definitely prefer the former to the latter. The melody is nice for a few measures, but it soon seems like there ought to me more complexity to it. Going back to an approach like in the intro seems appropriate at that point. If the keyboard is really meant to play more of a background role than a lead at that point, maybe back off its volume or increase the volume of the other instruments to let them shine through more.