I'll Never Leaf You Behind

Your soul has been trapped in a plant. You are now bound to the plant. If the plant dies, you die. You must go through the dungeon, find all the keys, and open the chest at the end that can put your soul back in your body.

If the plant's water level reaches 0%, you die. 
Get to the chest to win. 
Put your plant down with M2. 
You can then swing your sword to collect items/open doors with M1. 
M2 will pick the plant up again. 
Putting the plant down will make the water level drop faster, and will go faster if you walk away.