I’m kinda sad that the concept isn’t used better, because while the game looked and controlled really nice I couldn’t find any clear objective. Too bad, looks like there was a lot of effort that went into this !

Cool concept, and nice looking too. 

Interesting concept. Looking at a screen within a game is not always fun though. You could 'dive' into the defence mode minigame and include some extra info about your ammo, health, energy as well. If it's just a survival game then having some metric to measure how well you're doing like waves or enemies killed. The mouse look was really sensitive as well for me which made it a bit frustrating to navigate the environment. Overall nice effort :)

Nice Game. Good Concept.