Just like the other said, the retreat cooldown is horrible. And yes you can upgrade this but an upgrade should feel empowering and not just give basic tools. All people die since "oh well i cannot tell them to go back" you better count every single D class you send since they will run to their death otherwise. Moreover WHY do the cells despawn? I have a big fight and dont even get a reward for it since the fight was long enouth to despawn my loot. The idea of the game is great but the execution is ....not