I like the concept! Transforming into the last seen object - and using it first as a deception, then to break the log and save the tribe (looks like they were having a party also when the player character wasn't there, though XD)
When it comes to gameplay, there's a bit of lag after I mutate into grass - sometimes the opponent still got me even when I was ... grassy. Music is really nice but it stops after about 2 minutes 40 seconds - maybe you could loop it?
I love the simple art - and the different orangey tones in the background. Maybe you could use parralax scrolling next time? It would make the background even more eye-catching. : )