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