rework the major
read instructions. Played the 3 points mode games. Then played layer cake a few more times until I'd managed to get out the starting point, to get to the top layer.
Then read the instructions again in case I'd missed something.
++ Colourful enemies.
++ Workable walking anim.
++ Shooting code works.
-- Story mode - 'not implemented yet'? Why even put that button in?
---- Ammo boxes don't work. (don't add ammo)
----- They sometimes land in unreachable places
------ When we start, getting into a position away from the enemies can be near-impossible. Once we're away, there is no challenge. Specially in layer cake once we're on the top.
--- Being killed from an enemy as it comes out of a portal can feel really unfair. Maybe have the portal turn a certain colour, or have the enemies be benign for just the first second of their life?
-- Music should start automatically when the game has begun.
++ '3,2,1' is kinda cool.
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I think you just need to rework the major issues with the challenge. Make it feel fairer. Make it all more balanced. With more time and care, it could shine.
It's good that you've managed to get the shooting engine done so nicely - something I've not done yet. But as game, it's no fun.