>"Arrow bounce" upgrade: Avaliable after "Arrow width 300%". After the shot, your arrow can bounce off any surface only once, but this upgrade can be improved, the value is 2 points
Arrow bounce 2: your arrow can bounce off two times
Arrow path: Avaliable after "Arrow bounce 2". Aiming you will see the red path along which the arrow will fly. Also the path will turn green if it touches your enemy
Fire hammer 2: BLAZING HAMMER
Crawl: with this upgrade you can crouch, to do it, press and hold CTRL. I think that the game can be made realistic by adding the ability to hide from robots. I mean that robots will attack you if they notice you. They will also respond to your steps, that's why I added this upgrade.