Cheats:
Press [TAB] to access the type line. Enter the code as displayed to activate the corresponding cheat.The max skills seems to get stuck on once you’ve advanced to the next level or started the next cutscene.

The weapon codes spawn the weapon in your right hand.

Code - Effect:
PulseGun - Acolyte
SeekerXJ9 - Darkfire
SeekerMicrowaveGun - Discord
Pistol - Faust
PlayersOnly - Freeze Everyone but You
SeekerLauncher - Fury
God - God Mode
Blaster - H.A.Z.E.
Assault - Kaull
Suicide - Kill Yourself
BadAss - Max Skills On/Off
Teleport - Move to Crosshair
Invincible - One-Hit Kills
Photon - Stalker
StunGun - Stun Gun
Launcher - Talmage
SeekerPistol - Talon
UseAmmo - Unlimited Ammo/Energy
XJ9 - XJ9