Sycaro - Sniper 85 days, 4 hours
Saborle - Sentinel 22 days 17 hours
Sagerlo - Guardian 14 days 23 hours
Sycaroo - operative 9 days, 4 hours
Sycaro - gunslinger 4 days, 22 hours
Sycaro - Assassin 4 days 18 hours
Total: 141 days and 16 hours
I started playing right around the release of game update 2.2