Hi there BKLabanos, I am unsure about how this issue would arise and cannot replicate. The only way you can open the credits without finishing the game is if you walk into / interact with the crystal as shown above. If this is the case then you can just use WASD / Arrow Keys to move away from the crystal. The controls are below:
- WASD / Arrow Keys - Move
- Z / Space / Enter / Walk into - Interact
- Escape - Open Menu
- Arrow Keys - Navigate Menus