I've been playing arcade since I beat the stable beta (co-op with a friend, then solo on hard mode). After I'd learned thoroughly how to play against enemies, there is little challenge left to arcade mode. I have a good run if I get lucky with drops. When I get lucky with drops, I am able to clear most rooms fairly quickly and get s-ranks (using snowy buddy summon and spin-to-win method). I still struggle with some bosses (the only real place I take damage). The first time I made it to the floating temple, I was ecstatic because I had been struggling in all my prior runs. I found that I was able to breeze through it with very few hiccups. My damage was still high, and I knew what monsters to prioritize. I'm not so good at bullet hell dodging (Phaseman and Gun-D4M hurt me a lot), but other than those guys, there isn't as much of a challenge entering the higher levels as I was anticipating. Once you have a strategy down, you can just play through arcade mode with that strategy in mind from the start. I'd like to see the need to make decisions that become harder and harder as you progress. (As a side note: I'm sure once all the skills have been fleshed out fully and more items are added into the game, the divergence of strategy might show itself more in the early game. Right now, if I get sunglasses as a drop, I think of it as bad luck. I'd like to see that cause me to make the choice if I want to commit to a magic based strategy.) The challenging decision I used to enjoy in the later levels was deciding whether or not I wanted to spend my gold to top off my HP to get another health potion (if I could ace the boss), or to save it for something better from the store. Now that I am better, the HP becomes a null point. If I'm having a lucky run, the store also becomes a null-point. Whenever I see the dark priest who offers a unique challenge, I always accept it; Hardly ever for the reward but just because it will make things different. I'd like to see something like those challenges added in permanently from floor to floor or world to world. After each floor or world, the priest (or a new character) blackmails you. You're given 3 random options to pick from. Examples could be things like: A few extra enemies are spawned (sort of like in story mode after clearing an area) once you've cleared the room An additional enemy or two from the previous worlds will spawn in each room (random boars in winter-land?) The minimum number of rooms to fight through before reaching the boss will increase by 1 Pay XXXX gold for no adverse affects (but you lose the gold advantage & only if you have enough gold) Enemies HP increases by 10% Enemies gain 10 Attack Elemental obstructions appear (thorns, ice spikes, ice, cannons -- either more appear, or they start to appear once this is activated) Challenge me! Add them all! (Adds all the listed effects - maybe rewards you a bonus skill point) If there are enough options that it can be random or if the same ones can stack, progressing will require you to think about which of these you are willing to accept and shape your arcade journey to be more unique on each run.