Here is the full list of all 22 Pressure achievements.
Played 'Absurd' Mode
Never Died
Played 'Easy' Mode
Played the 'normal' way
Defeated Metal Count
Got best rating in all levels
Defeated Wellness-Train
Destroyed 8 enemies with one strike
Defeated 6 enemies with one strike
Helped out a friend
Played game in co-op mode
Passed on primary weapon
Collected all coins
Got best buggy upgrade
Destroyed all enemies
Fell off a bridge ten times
Defeated Mantis
Defeated an airship
Defeated 1000 enemies
First checkpoint not accessed
Defeated 4 enemies with one strike
Barely finished with pressure…