Arrow keys: Move (dodge the tribesmen) Space key: Attack (or kill them) 1 key: Sleep (increase rest bar) 2 key: Eat (increase food bar) Dodge tribesmen and keep up your bars to score points. Killing tribesmen gives you bonus points. Tribesmen with hammers build houses, which block your path. So do trees. You move faster in the river.
Sources: -https://en.wikipedia.org/wiki/Irish_elk -https://simple.wikipedia.org/wiki/Irish_elk -http://www.ucmp.berkeley.edu/mammal/artio/irishelk.html -https://www.amnh.org/exhibitions/permanent-exhibitions/fossil-halls/paul-and-irma-milstein-hall-of-advanced-mammals/irish-elk