This game has excellent graphics, fun fast paced gameplay, nice progressive variety of nicely animated enemies, interesting plot, nice mutation mechanics.
What this game lacks badly is either a story mode with an ending or high scores for players to evaluate their performance. Otherwise it is endless and pointless.
This game is in all aspects better then the later submission by the same author - Cubito Mayhem, because this game is less abstract and has more story, enemies and the protagonist have more character and gameplay is slightly deeper due to the absortion. Too bad both these games suffer from a lack of purpose - that would be either reaching an ending or some achievement, like a medal or trying to surpass some other player's score. I am giving this a half star more then Cubito Mayhem, for being strictly better, but I cannot give more for the lack things mentioned above.
I find that the absorption doesn't really do enough to justify the trouble of absorbing the liquefied remains of dead enemies, it seems to increase fire rate slightly, maybe also damage, but hat it also needs to do is to heal the protagonist for a longer game and to be really worth it.
I think authors should update their game with features I mentioned above and post it on newgrounds as a new entry it would make a very good game then.