Read the help box, Hold shift to buy as many possible. Problem solved. Actually, if more of you would take a gander at what the help box says, it will cut down on a lot of these redundant comments with suggestions for things already in game. So yeah, read the help box.
I like the game. I can't see myself going too far in, unless something drastically changes in the next few stages. It really, really needs hot keys to select the characters. Almost every stage I've played so far, everyone just ends up in a messy clump. Kinda of annoying trying to click the tiniest sliver of Edward's helmet through the mess, hoping you got it right and tell him to attack. Only to have val take two pointless steps deeper into to it all. Also, Not really a problem, just funny to me. why in the world, when you manually make the "archer" attack someone with his "bow", does he go into psychopath mode, casually walking up to them and start shooting them point blank in the face?
You don't need to do anything special to get the rings, just idle in the battles and they will pop up eventually. The settings/credits bollocks is just you clicking on map nodes through the credits overlay.
Have you thought about adding an option to set priorities to our squad. Like attack red first or ... sometimes when I'm fight bosses they'll just get stuck on the trying to solo yellow blocks, which is pretty useless sometimes.
Pokes the squishes as I always do in Psionic games. Hehe. It has an extra special effect in this one. 10/5 just for fan service. 1/5 cause I couldn't find any more squishies. Overall, 5/5 I could say so much more about this. I'm just gonna surmise and say, I really hope you stick with the 3d. Best P&C ever.
*Bug* I beat lvl 20, didn't beat the boss. Whenever I try to do the boss node that pops up after you win 20, it glitches out. Here's me floating by the boss "http://prntscr.com/5p1iui" and here is one of me winning after floating through a floorless castle for about 8 minutes. "http://prntscr.com/5p1kb5" It didn't count though. So yeah, I guess I can't do the end boss. :(
For the 4 most commonly asked about achievements: Click the elevator (Yellow triangle) 100 times for the first and 500 times for the second. The third is click the achievements room 100 times and the fourth is click the stats room 100 times.