Unbeknownst to me achievements have apparently been busted for a while. The newest update should rectify this and allow achievements to unlock normally once again.
I apologize for any inconvenience or annoyance.
Thank you : )
Marrow Update 1.1 is Live
Marrow has been updated with a few key fixes and changes
-It is now possible to easily swap between Keyboard/Mouse controls and Gamepad controls on the title screen. Just click the left mouse button or hit a button on the Gamepad to toggle.
-You can now quickly quit back to the title screen at any point during the game by holding down Select(Back)/V and hitting Start/Enter when the prompt appears. This makes it easier and more convenient to quit a session without having to go back to a save point to quit.
NOTE: This function is disabled in the Echo Realm and during survival mode to avoid exploiting it.
-Everything in the game is now frame rate independent, so there should be no more fast enemies for anybody regardless of the game's FPS.
-The biggest change is some tweaking to the Marrow's difficulty. You will now start the game with a larger pool of health compared to previous builds. The health increase is relatively small but will hopefully help newcomers get over the hump of the initial areas which can be a bit intimidating.
NOTE: This does affect the parameters of the health item achievement.
-Other small fixes and tweaks are present but nothing major.
Thanks to the discussion board folks for their feedback : )