Knife Tosser and Card sharp - Towers vs Fiends in Soulkeep Level 4

Today I want to play soulkeep and do not care if no one else is not playing this game as I found an interesting time when I play this game and now I am in level 4 and need to go to level 5 and wave after wave, I found myself in a great challenge so I have used some good towers and also Spells.

I have used Knife tosser and Card sharp and those are best cards to be used as they use less mana and also they are so effective towers to face fiends and to kill them quickly so I have used them at the beginning of the level and also I have used two powerful towers which are nightshade and also Charnel pit which is a quick tower.

I have used also some good spells starting with stew of doom which can be used with only 5 mana and also raining cats that can be used with 9 Mana and also so effective againt a group of fiends.

Level 4 is so hard and a first wave of it costs me 9 out of 12 Hearts that I have and I think it is very difficult to continue with only 3 heart but I will improve my defense with Raining cats and also other tower of card sharp in the next wave but as I have a time since my last play so I need to improve my skills with more try to pass as waves as I could.