Biggest question I have is WTF is a Crimson edge.... I have 2/5 on the trophy list and no idea what on earth it is. There is no explanation as to what it is.
The Chest rewards need to be fixed. struggling to get a chest just so you can get gold and not even a substantial amount of it kind of makes the chests worthless. Most of my characters are level 150 and up, they all require over 100 billion to upgrade. I finally kill boss 13 to get a chest and it gives me 2 billion gold....
The "upgrades" from chest impact the game very little. It seems to give a damage boost based on what level your on, so opening a 3 key chest at level 50 gives less damage than opening a 1 key chest at say stage 200. Which means the extra damage you get from opening a chest useless within 10 stages or less.