Bouncy Grenade

A normal grenade lands and sits where it stopped. This one skips off floors and walls and keeps most of its speed, so you can bank it around a corner or drop it down a shaft and have it still moving when it reaches something worth hitting. Reach is the real upgrade here, not the extra damage.

Pink Gel is the expensive half of the recipe. Until you have a steady source you will not be throwing these by the stack. They also still detonate on you, and a grenade that is bouncing unpredictably is much easier to walk into than one lying still.