Hey ! So hum we are really sorry if the controls did not match, that's surely because of the fact the game was developped under a french keyboard and you may have used the control under the english keyboard. We gonna fix that in the future, thanks for reporting. "If instead of having to press a button to move the drill forward, just using the arrow keys alone would be fine?" That's a possibility yeah, it could make the game more easier, we need to think about it.
Thank you for your review, we are really glad you enjoy it ^^