You wanted it. And here it is, the new saving system.

Changes to the save system:

• 5 Saveslots
• Direct display of the level and the current playing time.
• Shows the difficulty modes and number of players.

Other changes:

• New improved gamma adjustment for more visibility on poor displays.

Already Implemented

• 2 Level (extremely long)
  
• Local COOP mode
  
• Controller support
  
• Free configurable control
  
• 8 weapons
  
• 7 Standard opponents
  
• 4 Bosses
  
• Level stopwatch (for Speedrunners)
  
• Savepoints (So the long levels are not going to be too long. ;) )

Planned Content

• Another 5 huge levels
  
• Another 10 bosses
  
• More big guns
  
• Usable vehicles
  
• Each level new enemys
  
• Unlockable content
  
• Hardcore mode
  
• Bugs! Many bugs!
  
• Bugfixes! Many bugfixes!

• OS: Ubuntu 12.04
• Processor: 2.8 Ghz DualcoreMemory: 2 GB RAM
• Memory: 2 GB RAM
• Graphics: NVIDIA GT/s 4xx or equivalent
• Storage: 400 MB available spaceAdditional Notes: Not recommended for Intel GMA Graphics. Please try the demo to test it.

• OS: Ubuntu 12.04
• Processor: 3.2 GHz DualcoreMemory: 2 GB RAM
• Memory: 2 GB RAM
• Graphics: Nvidia Geforce 600 series or higher
• Storage: 400 MB available spaceAdditional Notes: Not recommended for Intel GMA Graphics. Please try the demo to test it.