Break through 50

You came to outer space. You found a lot of robots. The aviation fleet randomly gave you several weapons. Slowly you found out. The robots here have different lineups. Complete a level. Enter the parallel space. The map is different and complicated. You can be alone . Survive?
*Five weapon types

*Four monster types

*Fifty levels

*Seven achievements

*Different lineups

*Three items

*Different maps
Instructions:
Left click to attack. Right click to aim. Tab to switch options. C crouch. Space jump. Shift run. Space long press to fly (with ejector).