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