W - Posing A - Walk Left S - Crouch D - Walk Right J - Whip K - Jump O - Backdash Hold W and press J to throw subweapon. (You can use another subweapon other than cross!) Double jump is also achievable.
Many thanks to @Griffpatch_tutor for his tutorial on platformer. The project is just a demo and only Julius is available. The flying armor doesn't attack or deal damage. Healthbar and Magic point bar are not added. Only Health points (or Hit Points) is shown in numbers. Sprites from Spritersresources. Sounds from Castlevania: Portrait of Ruin Music from Castlevania: Dawn of Sorrow Can you find the easteregg?