There are a total of 5 missions in the game.

Each mission is setup with a different library of assets which can all be found inside the game's folder.

Each mission is structured from an .xml document that can be opened up in Notepad and be modified.

You can change enemy type, behavior, and speeds.

The easiest enemy type are the low hp kamikaze airships because they fly straight towards you in your line of bullets.

As the fourth level is the shortest, I used the .xml file as the template.

Then I replaced most of the enemies with kamikaze airships and slowed their speed slightly.

The easiest boss in my opinion is from the second level, so I also replaced the boss.

Last thing to do was copy and paste the newly modified structure.xml document into all the level folders.

Now the levels are all the same: short, and easy to get both achievements on. However, the first level on it's own is very possible to get both achievements on by itself, this was much faster.

REMEMBER: Save the original files safely inside another folder. You can name it something like "Original." That way if you want to restore the game to it's former glory, you can do so without having to uninstall and reinstall the game.

Download the newly modified structure[drive.google.com]document.

Replace them in your game's file location under missions.
IMPORTANT: do not change the name or number of the missions folders or the game will crash.