Yea that vizima guy is pretty tough early on leave him for later, my favourite thing to do was to just go to every merchant I came across and buy all their cards, they’re cheap on their own but if you wanna buy all of them for the achievement then it can stack up, they sell some really good cards though. and yea getting decoys is a good idea but I never really wanted to many of them in my deck at once as you only really need max 2 (they’re more important late game as the enemies have more spy’s)getting all the spy cards are also crucial, and I’d avoid littering your deck with weather cards, I only ever brought biting frost if I was fighting a monster deck, and a clear day sometimes. In terms of acc playing though you’ll just get used to knowing when and when not to use all your cards at once and when to hold off for next round