You have to play on hardcore mode because having the k and l keys on a different hand is just brutal, and I can't because I'm on a laptop. Well thought out train there, deface.
This game was fine until level 15, where there challenges left intuitive and solvable land and entered trial and error game play land. Which is not a good place to visit, even for just a vacation.
This has been previously addressed, but it cannot be driven in enough. GUN POINTS ARE NOT FUN. They don't scale with the difficulty curve at all, they put such a heavy restriction on weapons that I never once even tried a secondary weapon because they are for fun and glamor only, and they simply make the game less fun then it should be. Bubble Tanks 2 is one of my favorite games, and I am very disappointed in this iteration of the franchise. This brings many useless things to the table (enemy editor? Just, why?) and doesn't bring anything to the table that I am happy with. The custom creator of your ship might work, if you didn't prenerf it through gun points. In fact, the creator is a very good idea, the only good idea introduced by this game. Go back, play Bubble Tanks 2, make it better, add the editor without any restrictions after you have beaten the game, release as Bubble Tanks 3, profit.
Advertisement games are a boon to Kong. Why? Because for each advert game Kong runs and makes popular, the more income it gets. The more income it gets from this, the less income it has to get from the Kred system. Thus, it is able to sponsor games without making half of the content P2P.