A week later, I saw what problems there were and made corrections and added something.:
1) The weapon is now illuminated and without physics - So that those who pass it for the first time do not miss it (now only a blind person will not see it)
2) Added ammo to the levels: Village and Chemical Factory
3) Cartridges are taken automatically without E!!! Fixed this bug
That's all for now
Not fixed:
1) In the initial intro, the hero's position starts randomly - I don't know how to fix this bug yet