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