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