Mechanics:
-unique remastered animations
-character-switch mechanic:Swich from Chell to Gordon with a button,Chell will then follow you,attack enemies and have an advanced AI system
-new guns(spoiler here:Sniper pistol)
-new enemies(arctic sniper,arctic combine,capitain,etc.)
-new cores
-no Herobrine or swiss cheese
-spaaace(space,space,space,spaaaaaaaaace)
-Portal Gun remasterize
-new gun:The Gravonator
The Gravonator is a multi purpose handheld gun that is:a Portal Gun,a Gravity Gun,a Time Machine(slows or speeds up time for a couple seconds),a gel dispenser(the gel from portal 2,all gels:blue,orange,white and a new one,yellow).Or shortly,the Gravonator is a PGGGTMGD