Which level 1 creature is better?

Show me the evidence! :)

Okay, I'll download the game and just post screenshots.

It would be more correct to say "Halberdier" instead of "Halberdier." It sounds better...

In the "Boots" translation, we have "Halberdier," but if we're talking about correctness, it's not "Halberdist," but "Halberdier."

The Captain Centaur is the best... They have less health than the Halberdiers, but speed also matters (two attacks against one from the Halberdier means a lot).

Dude, who are you talking about? The Captain Centaur has 10 HP, just like the Halberdier, and the attack is 1.