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