Hi Ahmed, to check if your education level is high enough, I'd recommend using this site: https://www.nuffic.nl/en/subjects/education-systems-worldwide/
That's the official one that Saxion uses to compare international education to their standards.
As for working with blender and Unity, it's handy to show the work that you made in your portfolio when applying. Since you are proficient with these tools, It's recommended to use them for the intake assignment.
This course teaches you the tools needed to work in the game industry from scratch, so prior knowledge is not obligated only appreciated.