First launch

Quit the game

First death

Kill the first melee enemy

Kill the first enemy with a handgun

Complete the first floor

Complete the first floor

Kill the first boss

Kill the first enemy with a submachine gun

Complete the second floor

Complete the second floor

Kill the second boss

Kill the first enemy with a shotgun

Kill the first sniper

Complete the third floor

Kill the third boss

Kill the first enemy with an assault rifle

Complete fourth floor

Kill the fourth boss

Buy first weapon

Buy first aid kit

Buy the first body armor

Buy first ammo box

Start upgrading health improvement

Start upgrading speed improvement

Open your first chest

Buy paper airplane

Change the language in the main menu

Complete Health Improvement

Complete Speed Improvement

Complete fifth floor

Kill the fifth boss

Inspect the ending

Activate easter eggs in browser

Activate easter eggs in browser

Activate easter eggs in browser