Collect 6/5 gems didn't progress? Whatever, I like the idea, I don't really see any programming flaws except going over 5 gems. Maybe make the player move faster? No reason not too. I liked the procedural factor tho
You don't need to collect all the gems, and can go over the minimum required limit. You still need to escape the lava to the far right, there's a door that opens once you collect enough gems