This was extremely buggy and confusing. But I persevered since it looks like something I will love - and it is. Such a fun game, amazing concept, in my 3rd run when I finally got it I had so much fun.
For anyone confused on how to play - When you click "GO" on an item that affects other items, you need to click another number. Annoyingly not clicking the correct values will put your item on cooldown and not do anything. The game really needed better visual language than the default Godot buttons. As for the Battery (Increase ALL numbers on module), you need to click on the item you want to upgrade rather than the actual value.
But seriously it's super fun, if it you like roguelikes that have bunch of synergies and combos, play this. It's great.