-PFM never triggers the leg cutting death animation on any enemy that is possible to achieve.
...
-Shredder's explosive shell's rebound should deal less damage than the initial hit. MODIFIED (wount bounce after a direct hit anymore, but still deals high damage)
Yeah explosive projectile weapons are kinda messed up atm. They seem to not do different damage based on where you hit the enemy (limb, torso, or head), and instead always register as a chest shot, at least from what I've tested so far. Like how a tek-arrow headshot kill on a pur-linn triggers the chest burst death animation instead of the head burst one. I'm not sure if this was done for the benefit of heavy explosives like the grenade launcher and the scorpion launcher so you don't have shots getting blocked by an enemies hand and taking a damage reduction or what, but it causes some issues with at least three of the explosive weapons currently:
Shredder does full damage even if you just shoot their foot or hand
Tek arrows don't blow up heads or even instakill on headshot anymore (not counting the giant Mantid Soldiers which always took extra headshot tekarrows to kill for some reason), instead requiring as many as 4 arrows to the head to kill
PFM launcher never triggers the leg-death animation since I guess it's only counting as chest damage.
plus you don't get any unique death animations based on where the explosion occurred outside of the normal chest-triggered ones, like tek arrowing an arm or something.
or just watch this and you'll see what I mean
Hopefully it'll get fixed for those.