You should do your own research, I recommend the lastWar reddit

* Don't use Ammo bonanza tickets, the tickets never expire. Save up 720 tickets to get the Mythic blueprint

* Save every stamina for golden zombies (Zombie invasion). You will need a lot of gold for T10 ( ~11 Billion)

* Buy Universal decos. People wait too long to start buying these and regret it in the endgame

* Golden shards become easier to obtain in the late game

* This game is a marathon, put in a little work every day

* Try to reach level 30 as soon as possible.

* Try to do almost all golden secret tasks if you dont have mega refresh .

* If you have Mega Refresh, you can use single refresh until only three non-golden tasks are left. Then you switch to mega refresh (Someone did the math here)

* Don't fuck with your server. and don't let your ego take control of your decisions

* If you don't like your server, you can wait until Season 2 to switch servers

* If you are going to buy anything with real money, do research beforehand. Anything greater than 8000% is not too bad of a deal