What's new in Immune 0.9.5:
[*]Removed singleplayer option for now, because it didn't work under some circumstances
[*]You repair any building (= buildings of your friends!) by attacking it with a hammer now (instead of pressing E)
[*]Vehicles can now be repaired with a hammer, too
[*]Increased hammer spawns (in shops and boxes)
[*]Added positive health indicators for repairing/healing
[*]Made explosives drops more rare

Have fun playing!
Gabriel