Everyone is saying there combo of people is amazing and works well, and I have shieder and swordsman, and they're working very well also. I'm just going to assume in conclusion that this game is just easy.
@bobhead, I encountered the same problem, but try checking if your battle arena inventory is full, if it is full then you won't be able to open because it may be an arena weapon, and you wouldnt wanna waste your box.
Before the start I think you start I think you should be able to see like whats good and whats bad, because I see these random colorful things so I assume they're power-ups or something but they kill me.
@BurningDecks I used to have that glitch, but I found it only happens on IE (Internet Explorer) so my solution would be to switch browsers to Firefox, or Google Chrome. (I find Chrome to be the best.)
 "Elements"){kind=icon}
 "Champions of chaos"){kind=icon}
 "Anti-Idle: The Game"){kind=icon}
 "Neon Race"){kind=icon}
 "Love"){kind=icon}
 "Bullet Chaos"){kind=icon}
 "Doodle Defender 2"){kind=icon}
 "Zombies Took My Daughter!"){kind=icon}
 "Neo Tower Defense"){kind=icon}
 "IntoSpace!"){kind=icon}
 "Epic Combo!"){kind=icon}