Wow dnd is well balanced
Artificer level 4: ability score increase or feat
Artificer level 5: +1 proficiency bonus, +1 level 1 spell slot, unlock level 2 spells, new subclass mechanic
Maybe level 5 is kinda over stacked compared to level 4 there don't you think >_>
At least I get my heavy armor master feat so I can wear full plate otherwise I'd feel really disappointed