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