Level can be increased by earning XP (Experience Points), which are given upon completing a match, based on the amount of kills and time survived. Achieving certain Level milestones will unlock ability to obtain DNA for more Animals.
After a match that results in the player gaining a Level, the player has an extra 15% chance of gaining a cosmetic item. This compounds with the usual 26% maximum apparel chance (based on time survived), meaning the theoretical maximum chance for a cosmetic item is 41%.
After a match that results in the player reaching Level 5, 10, 15, 20, 25, or 30, the player will receive DNA corresponding to one of the animal types which the respective level unlocks. Time survived determines the base amount of DNA earned, and a bonus of either 2, 3, or 4 times the DNA is applied to the drop.