Here is the full list of all 30 My Friend Pedro achievements.
Complete a level without firing a weapon
Get S-rating on 10 levels
Kick enemies 100 times
Juggle basketball 10 times without it touching anything
Flip 10 tables
Kill 2000 enemies
Finish the game
Finish chapter "The Internet"
Dodge 1000 bullets
Kick a frying pan in to the face of an enemy
Finish chapter "The Sewer"
Get a 50x combo
Break 100 crates
Kill 1000 enemies
Kick a skateboard in to the face of an enemy
Finish chapter "Pedro's World"
Finish chapter "District Null"
Get an S-rating
Jump through 10 windows
Kill 500 enemies
Finish chapter "Old Town"
Kill enemy by ricocheting bullet off frying pan
Stick a knife in to an enemy
Kick a Gas Canister in to the face of an enemy
Kill an enemy using a barrel
Get a 20x combo
Get a 10x combo
Kill at least 3 enemies with one explosion
Get S-rating on 25 levels
Get S-rating on all levels