Soooo good. You have improved yourself a lot since after your last game.
This work has been a great example of a game with simple graphics can be still so much fun. Graphics seem simple but yet they are very artistic, i can feel the atmosphere of the game. Great level design by the way. The music is cool. Mechanics are very smooth for me. I downloaded the windows version. I had a webGL version problem in chromium and firefox (No problem since I never use firefox for playing games due to the speed).
For me I don't need any instructions, the game is extremely simple to understand, just do the combat with pests, keep exploring.
I say this to you, keep doing what you are doing here. You are absolutely in the right direction. I love this game ;)