TLDR: i beat mina and cotc 2 in five months
So I've been playing for about five months, i started in the tenth anniversary event, I cleared Bun Bun within my first month after some struggling (and totally not ubercarry, trust) after beating Cli-one, I went for crazed Cats, and got a lot of them, except lizard, I continued itf around my second month now with ururun, crazed Bahamut, and Hanzo on my team, soon getting mekako Saionji and replacing Bahamut, around this time I got the legend ticket from the 30-day login reward from the tenth anniversary, and got sharpshooter saki, and around this time, got asiluga from another platinum ticket I purchased. i used saki in place of ururun, then started treasure grinding after some struggles on most of the later stages in itf 2. I beat corrupted valkyrie and bought another platinum ticket, then rolled an abosutly broken rusher, D'artanyan (the uberfest version), and used him to get some timed rewards, then got stuck on Cambodia in itf 3 (I STILL remember >:[ ), and went back to treasure grinding. then I got stuck on Greenland (I hate ursamajor). This was definitely the most difficult chapter for me, as I had forgotten I had mekako, and just used saki and hanzo all the time. after alot more struggles, i finally made it to raging bahamut, and had to treasure farm all the floating treasures as well, by that point the only cat i had true formed was paris into cyborg, then i started the stage for the last time. i had finally beat bahamut after countless fails and hours. then i worked on more sol, got nyandam and mina, along with all the cyclones and maglev, along with the amazing courier cat, and alot of new ubers. so after a bit of grinding to get all the superior treasures in all of the chapters of itf and got back to cotc in my 4th month of playing at around 200 hours of playtime, i beat some levels and got stuck on cat god. he was extremely powerful, and i had no idea why, until i found out he was boosted to have extreme amounts of health and damage. after more treasure grinding (hooray i love required objects that are complete rng) i beat cat god and took a bit of a break from battle cats for a while. after a nice break, i came back and beat some more subchapters in sol and cleared cotc 2 without much struggle.