Those are just some ideas that would work, not all. If you have others that you can do, go for it, just kep to the idea that the player thinks, feels and is probably told that he is in a new level.

From what I have read, I kinda like what you've done in gameplay concept. It's neat.

But honestly how hard would it be to fade the screen to black for a brief moment to give the impression of a transition after each level or 'wave' in your game? Maybe a 'Level 2' message and a simple sound effect too? (like a military drumroll or trumpet)

You don't actually have to change your game's gameplay at all, just add in an interlude that represents the new level transition.


Just thoughts and suggestions for you, I'm sure you can come up with something good.