Read the in game instructions to play.

Bullet Fury Online. Go to a secret lab occupied by mercenaries. You have one task, find and destroy them all. If you do it, you save a secret project to save mankind. Bullet Fury is designed to be played by anyone. It's simple and even playable on your mobile. Choose difficulty and start a mission. Walk through the rooms vigilantly and blast away the enemies. There will be a lot of them, so only the best can kill all 100 mercenaries.

Walkthrough Video