Danger Forever is third-person scroll shooter,a bit different from usual "shoot everything in sight". Your health-bar is your fuel-bar. And everything cost energy - your movement, bumping into things, getting hit by enemy fire, shooting your gun. So defeating enemies is just a matter of survival -- energy they had just may keep you alive a bit longer. Controls Gamepad (X360 wired controller or clone, DualShock4) -- LS to move, R1 to shoot, L1 to shield. Keyboard -- WASD/arrows to move, Z or Ctrl to shoot, Space to shield.
Most noticeable issue is movement inertia.
Jump feels a bit 'floaty' -- character should fall faster (and probably move up faster too).
Movement inertia feels kinda strange; there are lot of people who HATE inertia in platformers, especially when stopping is not instant. When you have to do a lot of jumping with changing direction (like in the section with lots of breaking platforms), that inertia becomes really annoying.