Here is the full list of all 27 Oil Strike ‘75 achievements.
Complete 1 level on hard mode.
Complete 5 different levels on hard mode.
Complete 10 different levels on hard mode.
Complete all 15 levels on hard mode.
Complete levels from each of the 3 different types of minigames.
Complete 7 different minigame levels.
Complete 11 different minigame levels.
Complete 1 level of any minigame.
Get a perfect score on level 3 of Seismic Survey.
Complete level 2 of Derrickman within 45 seconds.
Complete the last level of Seismic Survey without hitting any animals.
Throw the payload onto the final platform of any level in Helicopter Run.
Land on the final platform with no fuel in Helicopter Run level 5.
Complete level 4 of Derrickman without activating any checkpoints.
Complete level 3 of Helicopter Run without refueling.