A great attempt for the people in your team that you say haven't partaken in a game jam before. The gameplay loop is here, the art and music are here, atmosphere is great. The gameplay's difficulty can use tuning. I'd sometimes go wandering to look for sheep & there wouldn't be any. Staying to defend the building is not so viable, because sheep don't tend to come close & the enemies damage me more than I can hit them anyway. This experience reminded me of the night missions in Pikmin 4.