Time for new attempt at level 4 which by the way I consider the hardest level in league 1 as I have seen from others posts that level 5 Map is much easier and also mana given at the beginning of the level is much better so it is hard to pass level 4 without a specific plan that makes it is easier to pass wave after wave.
So the main challenge of this level is is the first and second wave as the mana given is less than your ability to add more than one tower and the problem becomes when you enter the second wave and there is a way don't have any towers.
Although some bloodlings would come from it but at the end you are done as your hearts would not be enough so you have to save some mana in addition to the mana earned from the second wave.
So whatever the plan you would have to choose but you have to play well in first wave to save as much mana as you can and then you could upgrade your towers and then you could add more towers and spells to your map so you could pass this level and this what I am going to do.
