Try on TurboWarp: https://turbowarp.org/530529489 Instructions: Goal: Your goal is to go and find the portal then beat a boss and voilà, you have finished the game. To move: Arrow keys or AWSD. To beat a boss: Jump on his head he will lose life but he is shooting fireballs so be carefull.
This game would not have come into existence without help of this guys: TechnoAmv2345 - He is my best friend and he helped me not to stop working on Diamonds 2 Demo and also he made a sword texture. Damsodoe - He tested the game so I got feedback on how the game feels. Griffpatch - His tutorial on how to make scrolling tile based platformer helped me a lot. Coltroc - He made Cubetale and it was inspiration to made Diamonds. IcedSnow - He made platformer contest and I wanted to join so I made Diamonds but the time run out. Don't enter the Konami Code