Keep those helmets flying!

For free ingame items, join the following groups:
http://steamproxy.com/gid/103582791433980119 - PAYDAY 2 Group
http://steamproxy.com/gid/103582791441335905 - Dead by Daylight Group
http://steamproxy.com/games/thesolusproject - The Solus Project
http://steamproxy.com/gid/103582791460014708 - Raid: World War 2
For other free items from events:
http://www.overkillsoftware.com/lockekeys/
http://www.overkillsoftware.com/fedorakeys/
http://www.overkillsoftware.com/kentokeys/
https://www.overkillsoftware.com/housewarmingkeys/
https://www.overkillsoftware.com/payday2-social-safe/
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Leader's steam profile
Main Group