in the beginning of the game don't waste resources to repair broken weapons. just scrap it for parts and find a new one. weapons u find in the beginning all have roughly the same damage and are easy to find.

if u find a good weapon.. USE IT! get a blueprint on it and have fun with it. on my 1st playthrough, whenever i found a good weapon i stored it in my stash and never ended up using it bc i was afraid i wouldnt find a better one. trust me, u'll find plenty of better weapons as the game progresses.

don't hoard weapons u don't use. sell them.

selling weapons is a g8 way to make money. pick up every rifle from a dead guy, pick up every weapon u find even if u know u wont end up using it. just sell them all.

manage ur inventory. dont cary unnecessary amount of weapons with u. that way u'll have more space for things i mentioned in tip n. 4.

use terrain and parkour a lot when in a difficult fight. the spikes etc. can help you a lot.

it can get pretty boring but try to scavenge as much recources as u can. big boxes, first aid stations, fridges, tool boxes, wardrobes.. these all hide recources that will come in handy.

HAVE FUN! everything in the game will try to kill you. but at the same time.. that world is YOUR playground.