After becoming A+ ranked in-game it's just been boring. You hit a major wall around stage 60-70 if you aren't buying the weapons. Also it's waaaaay too specific. Like "if you don't level these skills with this specific gear and level up these pets you won't progress". In the beginning I was leveling multiple pets and then SURPRISE you need to have 2 pets at a specific level to rank up or 3 skills at Lvl 30. There is hardly any room for error. No resets. Also matchmaking takes obnoxiously long...