@T4m1 : When you use the speed up, your towers are a bit less accuracy, but it allows you let the enemies die a bit later (in the cash machine zone for example !). But it's an advance gameplay tech:)
I know my game is pretty short, but it's pretty hard too...
It takes a month at least for level designing a new level, and it costs money.
Hope a day I will release a new 3 level episode with the new turrets.
A level editor is on progress, so you 'll able to design and share your own maps !
Hope you enjoy the first part of Claytus TD :)