When I was playing dying light with friend we discovered that every timw you go to sleep and wake up air drop will appear, if you don’t know air drops are pretty rare and if you collext them and deliver to one guy you will recieve lots of xp, we used that multiple times to unlock grapling hook very early. Air drops also gave lots of medicine which was hard to get in early game and that very helped us
In baldur’s gate dark alliance 1, if you use the level warp cheat, you can go kill the onyx golem at level 1 and for some reason it gives you infinite experience. I discovered this as a kid and never saw it on any of the cheat sites.