Something's Wrong with These Goblins

On the first day of time travel, Andre almost died in the wilderness. A group of goblins used tactics, set up ambushes, and teamed up with other monsters to besiege - completely different from the legends on earth. The system helped him survive. The price is half a year of life. If the money is not returned within the time limit, he will die suddenly on the spot. On the way to pay off his debt, he met a fellow earthling. "You don't want to go home?" "I don't want to. But if you want to go back - get the imperial establishment and you can find the information to go back." So Andre began to work hard for the system. But when he really stepped into that world, he discovered—— The strange goblin turned out to be just an appetizer.