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