I got the tier 8 then the tier 7 from free crates in the space of an hour yesterday. Got the tier 5 and 6 in the first two days of the event starting, then must have opened over 50 crates with nothing. So yeah totally random
Thnx Mouse another good guide ...... Can we get sound with your avatar? Can't work out what she's singing or saying! And .... well ..... and it's starting to drive me nuts