Sweetness!
I like the whole icicles and patches of snow theme. Of course you two have also made a whole bunch of details I could feast my eyes on ...
Like those bits of random floor (wink at makkE) and broken bits, or the light-fixtures up top, or/and ... or/and ...
Are you sure you want that jumppad in the arena so forceful? I found it a bit too much; for example if I want to jump into the hallway to the right from there - for jumping left it's okay - anyway : long air-time is seldom a good idea with enemies around ;-)
Just wait till I come back this evening, I'll need to test-play this!!
But it sure feels very fast - even judging by just running around alone for a bit :)