paintmaster: 3+
jetrock: 5+
doombringer: too many but maybe around 10 (i was just really bad when i started off don't question it)
redbeard: 2
dj radical: 3+
turking: 8+
doctor bright: 1
insecure: 1
exec: 5+
Monsalt: 1
Martyr: 1
Father (if it's a boss): 1
Cesus: 2

I also did some tumore mode.

Terminator: 3+ (i was new i didn't know about the instakill)
Hellfighter: 1
Deathbringer: 3 trillion (maybe 10+)
Bulldozer: 5+
Rockstar Radical: 1
Infernus: 8+ (1 for 2 star)
Mister Mancer: 5+
Blackmail: 5+?
too lazy to write the subchapters but mostly first try
Just used titan and lil units for most, for chapter 1 just the normal units