I think this game needs a minimap, you can save what you uncheck in Game Options, What Zkythen said about more silver items to buy, characters can equip more items, and what gogglesonmyhead said, and being able to trade items.
Tip: If you have the Grabber block, only place those in the first, 3rd, and 5th spaces. By that the grabber will hold them long enough and damage them for you to finish it off.
Tip2: If You dont have grabber do the same spaces as Tip one said but by using the perfume block. That way they'll be stuck turning back and forward. But you have to space them facing opposite (meaning left and right)
Tip3: If you dont have either, then use the sticky block to slow and damage them. Space them like in tip 1 and 2. they will slow down and damage them and with the help of u, the demons will be dead.
Tip4: If you dont have any of them, use the Arrow block space like in tip 1 but you'll have to make them face left and right.
Plus this so everyone can be helped