Well they are likable at first. The movie does a good job getting you invested in the characters before....ya know. It also has a few laughs but not too many. There's some heavier topics addressed (not including the ax murdering) that would have derailed the movie with too much "Ha Ha". I would have liked if the lore about the entity and the Creole Man was fleshed out a little more but the length of the movie was definitely spot on. I think the Creole Man might actually be the more interesting character. You will feel a bit of sympathy for sure. Balancing the development of 3 dimensional characters while keeping a tight run time seems to create a bit of a trade off which had me making "head cannon" to fill the gaps but the characters were better for it.
As a fan of Indy horror I've seen lots of great ideas and even more bad ones. IPossessed is a solid entry and does stand out from many of its peers.
Lastly Sebastian sucks (not the actor...sorry). I was very happy with how his story played out.