I don't get why people are so against this. If they included Wheel of Money I'd totally get it, but Triple Diamonds is not that hard. If you're talking about 100%ing a game I want it to take lots of hours, I don't want it to be a checklist with two dozen items where I can scratch each item off in less than an hour.
Tower Unite is a game that focuses bringing a variety of gameplay, no one is going to like every single aspect and some aspects will involve luck.
Also everyone thinking "Oh I have to spend 10 hours on TD now!" remember not only is it luck based, but you can take breaks and step away from the machine without losing any odds for the achievement. Come back whenever you want, spread those hours across the span of two months and that's very little time every day. Sure your jackpot might be smaller if you keep hopping machines, but you're grinding it for the achievement and not for the money I'm assuming.