The game looks and feels great! Despite the 3 day limit, it doesn't really feel incomplete - it's almost like a finished product!
The magnet powers are a bit clunky and aren't used too often. Would be nice to have some sort of magnet range and direction indicator. Also, it would be better if character kept its orientation while walking up or down. Getting turned around was a bit confusing at times, especially when you're trying to jiggle-shoot an enemy.
But these are just nitpicks. Great game overall!