Enjoy it!
Controls:
Move and jump with WAsD or arrow keys.
Throw ninja stars with Space.
Press Esc to return to menu or exit.
You can jump while sliding from walls or grabing a ledge.
Further instructions are in the game.
Objective:
Go up through the levels until you reach the top and escape to freedom (going to one side) to complete the game.
If the enemy shots hit you or you touch spikes, you lose (press Esc to return to menu).
When completing the game is no hardwork for you, try getting the 3 badges that unlock a special cheat each one.
Some levels can be trickier than they seem, so don't give up early.
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EDIT: Attached project files.
With an extra project to give ideas.