Overall a decent survivor type game, I liked the graphics. The difficulty racks up fast, movement speed seems to be crucial, yet it is tied to survival time - maybe smaller increments for upgrades tier in the beginning would be better? It was unclear to me when points were earned - it didn't seem to be tied to any single achievement. Health upgrades didn't seem significant, as there was no health bar, I didn't feel that they contributed to longer survival. For the first playthrough sounds were absent, they turned on on entering upgrade menu.