Use arrow keys or WASD keys for 2nd player to move the ship or use the arrow keys on the game. You use your ship to kill monsters and you can customize the ship in the shop (Not right now). Once your ship is touching the monster, click the monster to kill it.
I made the designs on construct 3 and came up with the theme myself but I give thanks to Michael Nesci for helping me come up with updates to the game. Note: If you want more updates, go this this new game. https://scratch.mit.edu/projects/575660342/ Warning: There is a bug with the modes. I'm trying to fix it.