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