Alien Zombie Megadeath

There are 9 spacesuits that you can unlock. You unlock them by acquiring certain medals in specific levels. Below is a list of all the unlockable spacesuits in the game, what level they are unlocked on and what you have to do to unlock them.

• Green Camouflage: Level 5 – Fire Fight; Complete the Level
• Fiend: Level 9-alpha – Survival; Kill 250 Fiends
• Red: Level 9-alpha – Survival; Kill 15 Buffaloes
• Baby: Level 10-alpha – Survival Space Baby; Rescue 5 Space Babies
• UFO: Level 13 – UFO; Shoot 12 UFOs (this is also the UFO unlock, for the UFO trophy)
• Blue Camouflage: Level 15 – Boss Attack; Complete the Level
• Demon: Level 15-alpha – Survival Boss Attack; Kill 3 Demons
• Lumper: Level 19-alpha – Survival; Kill 200 Lumpers
• Black: Level 30 – Decoy; Complete the Level

Most are pretty easy to unlock. The hardest by far is the Lumper suit. You will need to get good at Survival to unlock it. For tips on Survival mode and general gameplay, please see the All the Medals trophy.