I've decided that I want to try and get to wave 30 for the first time but every time I get to wave 25-26ish I seem to hit a wall with either getting blow up too quickly or (more commonly) running into a boss that I pretty much can't damage. Does anyone else who has run into this problem know if this a just a problem I need to play better around or am I missing something.

​

My Build CoC FR:

https://pastebin.com/RaQz6nKm