Great entry!
The visual presentation is definitely one of the highlights - the effects look good and have a sense of consistency to them. Another thing I enjoyed quite a bit was the shifting mechanic. Shifting into an enemy makes you feel powerful, and there is quite a bit of strategy to it as well. A minor thing for me was that the player model does not increase in size upon shifting into the larger enemies, which feels like a missed opportunity as it would further enhance the feeling of power that comes along with shifting into them. Another small detail is that health and ammo count can be difficult to keep track of - it would be nice to have an option for them to be displayed closer to the center of the screen. These things are minor though, and in general the game turned out great.
Again, overall this is an impressive entry, and I'm looking forward to seeing more from you guys :>