Here is the full list of all 27 Oil Strike ‘75 achievements.
Complete levels 1-5 of Helicopter Run on normal difficulty.
Complete levels 1-5 of Derrickman on normal difficulty.
Complete levels 1-5 of Seismic Survey on normal difficulty.
Reload the game.
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.
Reach the drill sequence for the first time.
See a fossil in the dirt.
Break the game.
Complete the health and safety quiz in SeaFax.
Complete the game.
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.
Log into the admin page.
Find and call the "hot singles" number.
Achieve all the achievements!