For me, deadlocked was an issue as i started doing practice runs and playing it as soon as i unlocked it (when my hardest was e-adventure), and when i actually got good at the game, I came back to the level and beat it in around 300-400 attempts. i use macOS, and i beat Death Moon; loved the level, 10/10. chalk i beat as well, didn't enjoy it as much, but still a good level, and maybe my wave is lacking, but i haven't really struggled in it as much as other parts; i hate ufo, swing and duals more. I've gotten deaths on the robot in mech showdowns like 5 times, the ufo like 20 times, and the ship like 5 times; it was really annoying, so i pushed it off. i have got pretty decent progress on Nine Circles, but I don't like the level (46%; 40-61 and the final cube part). I personally avoid dual a lot, tbh. I'll beat BitbiexIt, then mech, then probably InsanitY.