Anonymous A (OP) replied with this 15 years ago, 11 minutes later, 31 minutes after the original post[^][v]#76,942
@previous (B)
Indeed. I'd imagine they'd have to start cutting down on the number of achievements you can get in a game, or just limit the amount that gives you coupons. Like, Team Fortress 2 has 369 achievements and a lot of them are really easy to get
Anonymous C joined in and replied with this 15 years ago, 1 minute later, 32 minutes after the original post[^][v]#76,943
This seems to easy to hack. Merely report back that you have unlocked the achievement and receive a coupon.
Anonymous D joined in and replied with this 15 years ago, 1 minute later, 34 minutes after the original post[^][v]#76,945
@76,942 (A)
Easier achievements would probably just net smaller discounts.