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
Elder scrolls oblivion: crafting your own spells. Applying fire, electric, or ice damage to the spell. If you apply over 25 of one damage type, you’d need to have an advanced Destruction skill level to use that spell. But if you apply 24 of all 3 damage types to one spell, you could still cast it at lower Destruction level. So you as a low level destruction mage could be casting a 72 damage spell that uses all 3 damage types, but you can’t cast a 25 damage spell that uses one of those damage types.
Edit: the downside was the 72 damage spell would probably use up all your mana in one attack, but hey it was still a useful damage exploit