Grey's Artificer

0 STR saving throw 0 str
0 Athletics 0 str
2 DEX saving throw 2 dex
2 Acrobatics 2 dex
2 Sleight of Hand 2 dex
4 Stealth 2 dex, 2 prf
Disadvantage

Advantage
3 CON saving throw 1 con, 2 prf
5 INT saving throw 3 int, 2 prf
5 Arcana 3 int, 2 prf
3 History 3 int
5 Investigation 3 int, 2 prf
5 Nature 3 int, 2 prf
3 Religion 3 int
1 WIS saving throw 1 wis
1 Animal Handling 1 wis
1 Insight 1 wis
1 Medicine 1 wis
3 Perception 1 wis, 2 prf
1 Survival 1 wis
1 CHA saving throw 1 cha
1 Deception 1 cha
1 Intimidate 1 cha
1 Performance 1 cha
1 Persuasion 1 cha

2 Init 2 dex
21 HP 3 artificer: 5 class, 1 con; 3 first-level bonus
21 AC 18 armor, – dex, 3 shield
17 AC 12 armor, 2 dex, 3 shield

Thunder Gauntlets 📣

+6 vs AC 3 int, 2 prf, 1

1d8+4 3 int, 1

A foe you hit has disadvantage on attacks on everyone but you for 1 round.

Defensive Field 2/day

As a bonus action, gain 3 temp HP.

Lightning Launcher ⚡ 90/300ft

+6 vs AC 3 int, 2 prf, 1

1d6+4 3 int, 1

1/round, when you hit, add an extra 1d6 dmg.

The Right Tool for the Job

Magical Tinkering

As an action, tinker with an object. Affect 3 at a time. These objects can: shed bright light, record a message, emit an odor or nonverbal sound, have a static visual effect.

Arcane Armor

As an action, designate an armor as your arcane armor.
It has no STR requirement, counts as spell focus, cannot be removed by foes. Put it on/off as an action. Change from infiltrator to guardian every rest.