Thanks for checking it out! I agree the Spider boss is a bit easy with that trick, but I didn't want to cause too much complication and basically make the floor untouchable or covered in spiders. Originally, the boss design was to trick the spider into shooting an egg sac at the branches, which creates the web to bounce up and hit it, but it was too complex to code. I might revisit the boss before releasing the final game, though!
Thanks again for the input - it's very welcome!