Not a bad premise but needs a good deal of polishing. As said by others, checkpoints are lacking. Combat needs to be smoother. Now, it sometimes happens that tigers move sideway while you're clubbing them then they have time to maul the living stuff out of you as you're readjusting.
A bit too fast (ending up being laggy) for me. Makes it tough to hit headshots on ghosts in lvl 2 and then there's not no way to keep them from overrunning you. Would be nice to reduce the amount of sprites and make up for it with a means of making shooting more tactical. Like having several weapons more or less effective depending on the type of critters.
good game. One thing though... Developers would score a lot of good karma if they added an option for resetting the keys, for azerty keyboard users. wasd is a pain in the neck