This game barely requires juggling, really, Except Movin On Up and Cut Through I have done every level without juggling and with a perfect. Some levels, for example Spread Out, are very hard and require much luck to complete them with a perfect w/o juggling. That level took me like 25 tries, But it still is possible. If you can't complete the majority of the levels, then your strategy just isn't good or you don't have enough luck.
I am sure they got the idea from DTD, almost all mobs (without spawner and regenerate) are from DTD. The regenerate mob is from Flash Element TD or something.
You should use machine guns. They get an amazingly fire rate at that level so they can take out the ghosts very fast. Also you should use 1 or 2 area burst towers for the non-ghost mobs.
I think it has to do with a lot of things what the difficulty means, for example on easy levels: you get more money for the creeps, they are weaker, and it takes longer until the game sends the next wave, the quanitity of the creeps is lower etc, than the hard levels.
It was a splitter right? It's a bug. I notice that if you use splash towers against splitters that such weird things happen. I think it's the exact same thing that happens in Desktop Tower Defense with spawns and splash towers and you will also lose a life, because of it.
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