I had. Where the sharks did some heavy damage on other places. And yes I did buy gear and the reason for that is, I'd still be stuck on insane otherwise. I just can't see myself being able to progress from Insane to Nightmare without buying stuff now. The Goblin rain at least give a weapon with 100 stats in several parts and that can help quite a bit. If you have stats that can beat some stuff in nm, then you should be able to progress. Magus Quarters nmhc surv is great for getting myths and it's very easy to defend. If you have EV and/or Summoner you shouldn't have too much trouble breaking into nm overall, it's tough at first, but there are a lot of tricks to it. A few maps that really can help is King's Game and as of recently Tavern Defense(Which you should get while it's still free). Tavern defense is very easy to beat. On Insane you can get supremes and ultimates from beating campaign fairly easily. And if you manage to beat the stage on Insane HC surv you get a Kobold on a Treadmill that will almost always have stats from 400-600(Basically a pet rock that is a million times easier to get and doesn't slow you down). Don't expect older maps to give good rewards on nm since they have not been revised since nm was first released. If you have trouble with builds check out DDPlanner.com. If you don't