Making a game. Thread

I'm in the process of making a game called "Build Defend Survive" I want to know your thoughts and opinions on how it looks and how you think the game idea sounds.

Indiedb.com here is the game in all its current glory.

So far the game will be an FPS, the story to it so far is (this will be a cut scene) that you wake up, it's a seemingly normal day, and you look at the answering machine, you answer it. It will then say either (I can't decide which) "It's a good day to die" or "You have 10 minutes to either come outside or die, you decide." you then look out the window to see a hit squad preparing to barge into your house and kill you. You then have 10 minutes to get geared up and defend yourself against them. There will be a combat knife, a pistol and a rifle.

So, thoughts and opinions on how it looks and sounds so far?

I fail to see where the Build part of your concept. Also even if you had one, 10 minutes are waay to short to build defense system. Well it depends on the size of the house your in though but still.You really need to define Build part well first

Also will there be radar system? or player will have to inspect every angle of the house manually to see where enemies are coming?

Last but not least, what reward player will get from surviving? score for every killed enemy? money from killed enemy? medals? or what?

I haven't gotten that far into the game yet, I'll add all the things to build later. This is REALLY early alpha.