Underground invasion is an action defense game where you can play defending Warcoder City sewers to prevent the invasion of strange creatures.
Upgrade your weapons and defenses to fight off the legion of evil creatures that attempt to destroy the protective bars that separate the city, from the sewers.
Mouse to Aim.
Left Mouse Button to Fire.
Reload: r key.
Edit mode: A key ( select weapons, upgrades and repair during combat ).
Pause: P key.
Numbers 1 through 5 to choose a weapon, ( once purchased ).