This game was promising, but with Siren working 3 games it looks like it took a backseat. The other game Zombie Retreat seems as if it was rushed along as well. Not sure this can be blamed all on developing 3 games, there's could be something else going on maybe just bored with the idea of making games?
Having said that ToP was interesting to play, the art is okay, it needs a better artist but if you want better art its going to cost more money to hire one. There's still a few characters and side quests that need to be completed, more then likely Siren adds a more content beyond whats unfinished!
The walkthrough 1.8.2 is the last known updated version, I tried looking for an up-to-date (current version) but I found nothing, the current walkthrough found on the Opening Page is the same one posted on the itch.oi web site, it looks as if Siren is the one posting the walkthroughs!