What the hell is this dog thing

[NW/RL]

And why can't I kill it

[EVILE-VON-OVERKILLE]

The Idea just from what I dealt with so far and got from it is it keeps you moving which makes everything run at full speed when you dont want it to...Now maybe Im wrong because I was thinking also you cant kill it but having an enemy type that is invulnerability itself is a cheesy kinda fake way to add artificial difficulty. Just Destroy all the weaker ones and stay away from it. It has no skill so ignore it.

[morbosfist]

The Dog is one of the three Minds, physical representations of the three Cores available to you in gameplay. He's unkillable and has to be avoided until you beat that level.

To avoid him, just circle around the room slowly and jump when he's about to charge at you. He'll miss as long as you time it right. Strafing to the side works, too, if you have the room.

[NOT penis man gaming]

dog is the first of the 3/4 bosses in the game. get to higher ground if he summons, he cant charge at u if ur up there. also, once you have unlocked a boss, red lumps will be found on the roof, floor and walls. shooting those will not only blast bullets from it and break it, but delay the boss summoning. if all red lumps r ded before that dumbass dog comes, he wont be able to summon. also, all of the '.mem's arent just worthless rewards but warnings as to what bosses are to come. (dog.mems r on floors 1 n 2, nindza 2 n 3, addiction 1 2 n 3, and avarice on all 3 too. there is a fourth floor, but u can skip fourth n go straight to fifth and then end of game, just like i did) also if ur gud u can get to next level before boss comes.

[Uroboros]

As others have mentioned, the best way to deal with the dog is to circle around it once it prepares to attack. It will assume a squatted stance for a moment before instantly charge-teleporting in a straight line, and if you can put in enough horizontal movement, it will miss. Another alternative is to get to a higher elevation, because with enough vertical space, it'll be another clean miss. Be careful though, because it will bypass physical obstacles in the charge, and if you don't get enough height it will sometimes charge up to your level too.

When doing your usual routine, keep the dogs position in mind at all times, and ensure you have a clear exit strategy, even if it's only ducking around a corner. Be careful about this though, because you'll want to know when to start dodging its charge, and you don't want to turn a blind corner only to find about to run into your face.

Other boss-like 'core' entities have their quirks too, but dog is tricky because you can't stagger or stun it, but it helps to train you on how the play-field gets restricted based on the entities in play at any given time. That's something that will become an increasing element from here on out. Whenever you hear the loud noise of a core entity spawning in, that's when you know you need to switch up your play (and each noise is slightly different signifying which core-entity just spawned).

Good luck!