Skeletal Avenger
21 Achievements
GOG
Coin Operator
Collect 100,000 coins.
4.3%
How to unlock the Coin Operator achievement in Skeletal Avenger - Definitive Guide
This is cumulative and you can check your progress in the stats section of the main hub before selecting a quest. Just click on the green mirror and look at your coins earned.
I found it helpful to sink my coins into upgrading my Luck early in the game so that I could earn more coins to upgrade other stats. Also, choosing any perk that mentions upping your coin intake is helpful, but my favorite was called, "Headed to Wealth" and let's you get x5 coins from enemies you kill with your skull. I had one quest that actually gave me 2 of these, which led to x10 coin drops from throwing my head at enemies. I was getting around 100 coins per enemy on that quest and made sure to carefully kill everyone with the skull rather than my weapon (there is also an achievement for only using your skull for kills on a quest, so it is good practice). Finding chests and destroying boxes, crates, and urns also yields gold, but nothing is as effective as killing with your skull with the perks on.
I found it helpful to sink my coins into upgrading my Luck early in the game so that I could earn more coins to upgrade other stats. Also, choosing any perk that mentions upping your coin intake is helpful, but my favorite was called, "Headed to Wealth" and let's you get x5 coins from enemies you kill with your skull. I had one quest that actually gave me 2 of these, which led to x10 coin drops from throwing my head at enemies. I was getting around 100 coins per enemy on that quest and made sure to carefully kill everyone with the skull rather than my weapon (there is also an achievement for only using your skull for kills on a quest, so it is good practice). Finding chests and destroying boxes, crates, and urns also yields gold, but nothing is as effective as killing with your skull with the perks on.