Thank you for trying the game and enjoying it.
My game is set up like a steps plan.
First you play in easy mode to know the levels and enemys ans trap position and if you get the hang of that you can try for collectables.
I like to give every diffeculty its own rewards.
Easy: beating the level and weapon parts.
Normal: CD and hidden level
Hard: skull coins leading to ammo upgrades CD and a unit of a gun.
The thing about skill is you can gain them and get better and dont give up! my game asks for pattience and use of your brain a little.
You can do this and always farm up for gems and lives if you need some extra help.