The best tactic is to go upstairs and collect everything first, then go back downstairs get everything else, and get to the garage. The best way for me to escape is through the garage. Also, the first time I played this, I got a jump scare for a kangeroo lol.
Nice game. Good FPS, a little lag here and then, but overall its pretty good. One slight issue, however. I believe that for an intermediate level, its much too difficult.