Bombing Busters
13 Achievements
7-9h
PSVITA
PS4
Boss Slayer
Defeat all Bosses with 3 stars
1.2%
How to unlock the Boss Slayer achievement in Bombing Busters - Definitive Guide
Once you defeated all the bosses, you will unlock this trophy along with the last boss trophy that you needed. I'm not sure about the requirements for 3 stars, because I still got 3 stars, even with more than 2 minutes needed. Most bosses should be down in 1:30-2:00 minutes, if you go for every opening that you can get.