Game Proposal- Scratch Level 4

Game Proposal

Story/ idea: 

The world is near collapse because of excessive nuclear radiation. Much of the population died, but the few that are left have either become irrational hostile creatures or developed strange abilities like the main character Sam. These people are trying to grow vegetation in small protected labs, in hopes that someday earth will go back to it's original state. But since plants have become very scarce, you must go out in search of them, in each stage trying to collect as many different species as possible without being killed by a monster. Once you are able to collect enough plants you'll have completed the game.
(2 or 3 stages)

Game play:

Defense & Attack: You can try to avoid monsters, but if you're seen you must try to defeat them by using your power, you can use this by filling in the power bar, by clicking the correct buttons displayed on screen, once the bar is filled you can use your skill and the opponent will be defeated. But you need to be able to complete this in a correct amount of time, otherwise you'll be defeated.

Move: By clicking the arrows on keyboard

Characters:

Main Character
Sam:
(no specified gender/ unsure now)
Has the ability to release strong energy which can kill monsters.

Daniel & Julia:
Scientists/ researchers. Take care of the lab.

Coding:

Change of screens when a stage is finished and maybe if you are attacking an opponent.
Addition of points when you collect plants. Once you collect the correct amount, the stage ends. As stages progress, buttons required to click will change and the time until the monsters attack will be shorter. I will also change the appearance of sprites depending on certain actions.
If player is defeated they'll go back to the beginning of game or 1st stage (unsure). 
I will create most of the layout of the game and sprites on Photoshop. A few might be from the web.

Inspirations for game:
Opus: The Day We Found Earth 

(The first idea was too complicated to complete in given time).

The second proposal I made was the one I made:

Idea:
Try to recreate space invaders, but with a twist, instead of the opponent being aliens, it is the opposite, it's the aliens fighting against people.

Characters:
No characters, only alien and human space ships.
Will be made on photoshop.

Coding:
I will try to make various ships and have them dissapear once the player shoots them, after that space ship is shot the score increases by 1.

Tutorials & Inspirations:
Atari Space Invaders
https://www.youtube.com/watch?v=oiCgYgibqAM
https://www.youtube.com/watch?v=7heq5xo6prE