to reach the last box (or even get bonus boxes) as f2p you need an roster that offers some variety. depending on how old your account is, you might not be able to get to the end... yet. if you don't have a roster that let's you do ALL the episode quests you most likely won't reach the end. those 8k bonus points do A LOT of work! as soon as you have enough variety to do those, you will see improvements. i've just finished this run and got the bonus box 5 times. i've got an 18 months old pure f2p account (no gl yet) and my roster lets me get points on almost all challenges. that's all it takes.
keep going, stay focused and you will get there. if you get to box 45 now it won't take long. you are almost there. 🙂
