The new abilities change gameplay settings offer opportunities to put boost jumping and other features to work. In Exo Survival multiplayer mode, exos can be enhanced with upgrades including a protective shield and an invisibility cloak. The tactical suits, also referred to as exos, enable players to 'boost jump' higher than ever, instantly dodge left or right and use evasive maneuvers in midair, among other things. In what 's Steven Burns calls a 'game-changing' addition, exoskeletons give soldiers abilities like they've never had before. 'When you first bear witness to a flying giant snake made up purely of small drones roaming the streets of Seoul, you know this is new science-fictional territory for Call of Duty,' wrote Miguel Concepcion in his review on GameSpot.