Glad you enjoyed playing, and thanks for the kind words!
First of all, yeah we know we needed to add a tutorial, complete oversight on our end, though we did have the drawings in the bottom left of the screen on a bit of paper, though that's definitely not clear as to what that is.
And the bottom bar is actually a health bar! The timer is at the top but the health bar goes down when you step in hot goo, we really should have added some damage indication for that but we ran out of time to add that in, another thing for post-development.
Thanks for playing! Really means a lot