This is a neat idea, very ambitious! I thought the graphics were glitched at first, but once I got the eye it made sense.  I like the animations, the hopping with one leg is neat.

I got up to to picking up the harpoon tongue. A few issues stood out:

• The jump and land sounds are irritatingly harsh, especially compare to the nice clean clink of taking damage and the pleasant music.
• As others mentioned the framerate was annoyingly low in some rooms, particularly Volcano Access.
• The minimap is confusing when both you and doors are tiny green dots.
• It was frustrating having to switch between the game and the itch.io page in order to find out the controls, and when I got the harpoon tongue it took some time to figure out it needed to be selected like a weapon.
• Is there something I'm supposed to do to interact with the monoliths that seem to be save points? When I died from being attacked (while trying to figure out how to use the tongue) I respawned back at the beginning with no parts (and then when I got the eye the blob no longer rolled, just faced the camera). When the monolith was highlighted I tried every key to try and save, but something when I pressed "G" I think I respawned outside the map, had to quit.
• When I fell into the Precarious Grove with just the eye and leg, it seems like there was no escape but death, but after falling in the lava to burn down my health I respawned outside the map again.
• There were a few jumps that were just on the edge of the single leg jumping ability, it seems like I needed to have a running start before I could jump high enough to clear these, probably would be better if it wasn't so close.

It's a shame there aren't more ratings for this. I expect the huge download scared people off; generally in-browser stuff gets played a lot more than even small native apps. Also perhaps reconsider the name, it sounds a lot less interesting than the game really is.

I was excited to play this game but I couldn't get pass the obstacles in the first area. Not sure what's going on there or what I'm supposed to do. Can't seem to jump over the first obstacles. 

I really enjoyed the concept of slowly building up the character by unlocking more body pieces. It was like Spore meets Metroid. Some feedback that I have:

• The lag/lack of optimization reduced the enjoyment somewhat. The assets could have maybe been more compressed to save performance/reduce the download size. 
• A menu screen on start-up would've been nice. It's not a deal-breaker, but it felt less polished and there seemingly wasn't a way to quit without force closing the game.

But I generally thought this was a great take on the metroidvania genre. It took the concept of exploration and power-ups and made it feel satisfying. Some jumps/areas were tricky, but in a way that made success feel meaningful.

Quite an interesting game. It may be worth adding a map (to a minimap).

Add: Also, optimization would not hurt the game

Why does the download button take me to a google drive?? Please upload a build to itch.