Welcome to the floor is lava! All the instructions are in the game, but.... ~ Use the WASD keys to move ~ You have to go to the right of the screen to go up the levels -> (that way) ~ You can only stand on black outlined objects... Watch out however, for any black outlined objects on fire. They are bad objects and you will fail if you touch them. ~ But mostly, don't touch the lava!!!!! Sometimes when you die and start at Level 1 again, there is a glitch and the lava doesn't start where it's supposed to, so you get trapped in a cycle of dying - don't worry, just let the glitch finish running and the game will continue as normal. I'm still new to Scratch so I'm not sure how to fix it, otherwise I would.
Big shout out to @jeukjerk for letting me remix the game. You should check out the original game.