great ending

So it’s a lab rat gone lethal? the actual form of the protagonist is left wide open, could be a rat, a rat-human, a monster.. which leaves it open for sequel :) Its a very terrifying ending here too.

Ya.. The idea was to kinda be ambiguous about WHO the protagonist is!
Fantasy actually speculated that it was an alien.. and i’ve hinted to that a little..
but again… It’s left up to the reader to make it whatever he or she pictures in his or her head as the story unfolds.