Obstacles

Ladders: Soma will be using ladders to get around in buildings.
Poisonous monsters: the purple blob-looking monsters shoots poisonous gas which Soma has to avoid.
Giant Spiders: these giant evil spiders will prey and eat anything that it sees.
Rewards

Meat: you can get these by destroying other monsters and eating it for health.
Coins: you see them laying around or breaking boxes.
Chests: you can randomly find chests and sometimes it will hold coins, meats or weapons.