Here is the full list of all 25 Spanky! achievements.
Play your first game of Spanky!
Reach level 10
Reach level 25
Reach level 50
Reach level 100
Open your first Booty Loot
Play 10 games in a single lobby session
Smack 100 booties!
Give one of your team mates a slap on the booty
Turn your Cheeb's booty to face you in the main menu
Slap all the hidden booty buttons in the lobby
Win your first game of Champion
Find 50 Tushie Tokens in the Sandbox
Find 100 Tushie Tokens in the Sandbox
Play 10 games
Play 50 games
Play 100 games
Slap an opposing Cheeb while swimming
Open 50 Gloot Boxes
Open 100 Gloot Boxes
Gas Blast another Cheeb
Get caught in a Gas Blast
Deflect a slap with the Booty Barrier
Use 25 Butt Bombs
Kill another Cheeb in Death Tag at the same time they kill you