The problem with the achievements is, there is so much luck involved because of the draws. Its not like in real life, where every CL is filled with great teams. Some CLs in T11 are just easy to win.
But dont understand me wrong, 5 consecutive wins is a great achievement.
On another note: My transfer market is sooo strange. Yesterday a Q53 or 54 (5*) 26yo defensive wall DC/DR went to KO round 47 (man I was glad i didnt compete for him^^), just now a 25yo Q52 arieal defender had 5 biders in the initial rounds, but noone made a bid in KO round 1. 2 players of the same quality, one for 48T, one for 1T...
I have my first hard match on day7, so I guess I wait a few days before I get players. I only have ~35T and I dont want to spend money on T11 this season, so I have to buy some cheap players.