Simple but nice premise! I think the fact that if I step away from my computer for too long I might die carelessly adds a lot to the feeling of risk, which is a pretty clever play on the theme haha.
The only thing for me is that I think the music could've been set to loop as the abrupt end of it might be a bit odd for some players. I also think the equipment could be made cheaper since I think the initial price of the items seemed quite high at least for me, but it also might be because I need to spend more time letting the hero progress.
Overall, this was a fun game and a really nice twist on the idle-genre of games.