Ok, so I'm back to Warframe after about 3 years away. My fully loaded Ash, Dual Fang, etc is in good shape.... but I cannot find the screen to alter what mods are equipped. In the Arsenal my only choices are "Appearance" and "equip." It seems that Warframes always carry all skills active, as I'm pretty sure I never bothered wasting mod space on Shuriken. There's also something in the keyboard controls about a 5th power, but I haven't seen that yet.

Did they mod the wallrunning heavily at some point? I used to be able to jump and run along a wall horizontally, or up one, but all I've managed to do today is a funny bunny-hop up a wall.