ToME: the Tales of Maj'Eyal

Red scratches/blood is blinking too fast, may be on faster comps only. It's little hard on the eyes. I'd suggest make some effect duration increase and may be alpha-fade(it will end asynchronously). Blood position/scale also could be randomized a little, or if it tiled just make several blood tiles chosen randomly.

The are positioned and sized randomly already (and chosen randomly from a list of 18 possible ones)
On my computer (which is fast) it looks well maybe it's a matter of taste ? They are voluntarily very fast