Here is the full list of all 21 PUSS! achievements.
Defeat Baphomet
Collect 30 timer items
Score million points in total
Beat an episode in 5 minutes
Meet JC
Free Icarus
Meet the Princess
Meet Ric da Fi$h
Meet Chronicorn
Get to the hall of seals
Get to the boss level with no deaths
Get Speed and Flawless Run in every level of episode
Beat a level with no touching walls
Do you like these glitches?
Collect 30 heart items
Beat 5 levels in a row without losing shield
Beat a level witþ €\À,Ñ»ÔßGð]
Beät 10 levèls шþŒ úàÐüäobÛèû7Ë
Bãú‡ 2‡_DáQÝÈ _šòà AT¡Jr\àJòLnÙZ
Beat a level in a second
Collect 30 lives