The game is pretty interesting, and moving from tombstone to tombstone quickly enough is very exciting. Unfortunately, that makes it all the more frustrating when you shoot a vein and it just refuses to move forward, causing you to take damage even if the target tombstone is right in front of you because the veins don't reach it due to bugs. I want to replay it until I manage to reach the tower, but the bugs drain my motivation to try again.
(If the veins not reaching tombstones is not a bug but a feature, then that element isn't explained adequately. I was unable to find any cause to the veins not continuing, only some correlation to height differences; it feels like a bug.)