Hey that was a great time, I really enjoyed it! I can see this getting addicting with a bit more love. but for 5 days that's really impressive!!
Now, for some unsolicited ideas haha. I'm sure you already have these ideas and tons more for the future releases but juuuuust in case, I couldn't help but think of stuff that would be cool!
Okay!
1. I was thinking it would be cool to give your life a bit more meaning, as of at the moment.. it feels like how well I perform matters less. so the thought was, what if the upgrades you chose would receive a small buff/added effect/percentage increase or something depending on how much health or life force you have! that would give more incentive to play conservatively with your health.
2. On the other hand, its always fun to have a build that relies on the opposite of something you have established, so instead of conserving health, have skills or spells/weapons that take health in order to be used, thus locking you out of the health benefits but they make up for it in other ways.
3. higher tier skills depending on how far you get before sacrificing? maybe??
4.Secrets!! maybe even a key you can unlock with a sacrifice after a certain wave is reached?
5. I assume when you die without a sacrifice your back at square one? If so then have like goal waves to reach also.
Apologies if the message comes off as rude as that is not my intention. I just got so excited playing this game that my mind was just envisioning things. I hope to play more in the future! you all did a wonderful job!!