If you do not know what PTR is in UnderTerror, then if you take damage, your max hp also decreases, Or, look for a better explanation on the internet. Also, UnderTerror is really hard in the original, so play if you dare. LINK:https://gamejolt.com/games/underterrortoxinfight/412096 thanks to Toxin on gamejolt for the original. And @Loganvcairns for the sans attack creator Oh yea, press H to heal.
