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