Here is the full list of all 17 Heavy Bullets achievements.
BEAT THE GAME
BEAT THE GAME, MAKE NO WITHDRAWS
SELL A HEAVY ORE
FIND BOOMBOX
GET BACK AT LEAST $200 WITH LAST WILL OR LIFE INSURANCE
REACH LEVEL 8
REACH LEVEL 5
OPEN A SECRET DOOR
KILL A SNAKE WITH A KNIFE
REACH LEVEL 2
DIE
BEAT TURRET BOSS WHILE WEARING HIGH HEELS
BEAT THE GAME IN UNDER 25 MINS
USE RITUAL BLADE 10 TIMES IN A RUN
REACH MAX HEALTH
$10,000 IN THE BANK ACCOUNT
UPGRADE EVERYTHING