The leaper mobs (cant remember the full name i think they were called Soul Spawn or something like that) are extremely overpowered , even normal ones deal more damage than some of the bosses on expeditions , if they freeze you and leap on to u and there are few trash mobs around u die too fast , and sometimes when they leap to me i use dodge roll to escape but i still get knocked back after the dodge roll animation ends and take a lot of damage that might be a bug that needs fixing , and i think they need some overhaul so they are not more overpowered than the big bosses. So now for the life leech , i think it works like this : you deal damage the game calculates the amount of hp it needs to restore by the damage you dealt and after 1 second your hp gets restored , that is the worst life leech system i have ever seen in a game , i don;t like it one bit , the recovery from life leech should be instantaneously not after 1 second , not after i am dead , so if you can do something about the leapers and fix how the life leech works , at least for me the game will be a lot more entertaining.