In the beginning of the film when Drake shoves Phil backwards over the desk, Phil is seen rolling over the desk sideways.
Based on their backpacks, the group could not possibly have enough food and provisions for a ten day hike.
In the beginning of the film when Drake shoves Phil over the desk, the latter lands on the floor impaled through the eye by an animal skull's antler. The skull was not on the desk, meaning it would have been on the floor behind the desk.
Zoe's mic pack is often visible near her waist under her tank tops, and a few times a wire is visible falling below the shirt hem.