Here is the full list of all 17 Beater Spirit achievements.
Kill 50 slugs.
Play 30 matches.
Kill 50 bats.
Dead 20 times.
Play 10 matches.
Get last bronze hairstyle.
Get last bronze costume.
Get last bronze weapon.
Get last silver hairstyle.
Get last silver costume.
Get last silver weapon.
Get last gold hairstyle.
Get last gold costume.
Get last gold weapon.
Play 60 matches.
Reach 20 level and open gold tokens.
Kill 50 skeletons.