The Great Vermin Extermination

Action:
Fire your three-way shot backwards or forwards and dodge enemy attacks!
Make sure to master your moves!

Special Shots:
Enemies drop items when defeated. Collect a lot to raise your gauge, and then you'll get to unleash your special shot! This shot will pass through enemies, meaning you can really do some big damage!

Ranking System:
The game gets more difficult as you go, but the rewards get bigger, too! Keep that score high by not taking damage!

Game Over:
If you lose, Amame will get r*ped by the bugs. Their losses may have been great, but hers will be greater still... Get ready for eggs!

There are 5 levels of H scene that change depending on the outfit.

Gallery Mode:
Fulfill certain conditions and you'll unlock CGs. You'll be able to do it even if you're not a pro gamer, though.

Post-game Content:
Clear the game and unlock three new rules!

Efficiently:
Item effects are doubled.

Risky:
One hit = Game Over.

Hot:
The highest difficulty level.

You can also unlock another outfit for Amame.