Fun game! Pretty hard sometimes. It's fair enough to the point where I think it's feasible to beat with no upgrades.
The omnidirectional movement system is great, very fast paced. It's fun to take out the enemies in rapid succession.
The hazards can be hard to avoid at times (or I could be bad), but the blood-to-heal system balances it out. As such, going as fast as possible is a very viable playstyle. The room randomization was nice.
The sprite work is nice, as is the music. It's a pretty funny game despite the mass blood harvesting, and there are some nice references too.
Liked it a lot.