I'm softlocked in a different place. I backtracked towards the starting save point (because I remembered some yellow blocks back there) and after reloading from the save point I've lost the HUD, the speed upgrade, as well as the grapple hook (but I still have 3 weapons). I already toggled the switch so there is literally no where to go that doesn't require the grapple. When I quit to title it says slot 1 0% (but I still have the laser and the heavy shot).
So I guess I'm totally fucked unless I start over. Cool game otherwise.