What would your Custom Class be?

Unstoppable ME3 Sentinel:

Class power: Tech Armor
Base powers: Barrier (biotic), Defense Matrix (tech), and it does not even matter about the rest
Bonus power: Fortification (combat)

The only thing that can stop that Sentinel are sync kills and the plot.



If you can include powers from multiplayer, then Vanguards and infiltrators could achieve the same thing with Blade Armor (combat power).

Unstoppable ME3 Vanguard:
Class Power: Charge
Base Powers: Fortification (combat), Blade Armor (combat), Barrier (biotic), and who cares about the other biotic power but probably Nova
Bonus Power: Barrier (biotic)


Unstoppable ME3 Infiltrator:
Class Power: Tactical Cheat
Base Powers: Fortification (combat), Blade Armor (combat), Defense Matrix (tech), and who even gives a crap about the other tech power
Bonus Power: Barrier (biotic)



For those curious, BSNer Cyonan figured out how damage reduction works (see here). Basically:
A. You take +40% more damage when out of cover,...
B. So +100% Damage Reduction (DR) means you take no damage when in cover,...
C. So you need +140% DR to take no damage when out of cover.

Currently it is possible for an ME3SP Sentinel to take no damage for a limited time under specific circumstances (video link).

Damage Reduction (DR) available from "always-on" powers:
- Tech Armor: +35% to +50%
- Fortification: +25% to +40%
- Blade Armor: +25% to +40%
- MP Barrier: +25% to +40%
- SP Barrier: +15% to +30%
- Defense Matrix: +15% to +30%

Other powers can provide a temporary DR boost, such as Energy Drain (+40%), Reave (+15% to +40%), Biotic Charge (+50%), and MP Biotic Shield (+20% to +40%).

Hmm...

Infiltrator: Hide and Seeky

Class power: Tactical Cloak

Base power: Energy drain, incinerate, incendiary ammo, shadow strike (Kasumi's version), decoy

Bonus power: Flashbang grenades

Vanguard: Biotic Splodey head

Class power: Charge

Base power: Nova, Pull, Reave (the ME2 version for health regain), Annihilation Field, Dark Channel

Bonus power: Disruptor Ammo

Sentinel: Tanky Boom

Class power: Tech armor

Base power: Dark channel, throw, overload, Annihilation field, incinerate

Bonus power: Nova

Engineer: Wicked witch of the Drones

Class power: Combat Drone

Base power: Sentry turret, defense drone, assault turret, geth turret, energy drain

Bonus power: tech armor

Heck, I have played through Mass Effect Andromeda 1.5 times (have not finished the second playthrough), and in both playthroughs I just picked three powers and never switched. I only kept putting points into the other powers for the passive bonuses. All the extra powers are a waste.

Vangaurd
CP adrenaline rush
BP
1 shockwave
2 singularity
3 clusters grenade
4 warp
5 cryo ammo
BP flare

Biotic Shepard is a big no no. I'd have a soldier class, but with all the tech abilities of an engineer. Tech savvy Shepard is much more lore/canon friendly than a biotic Shepard.. Because Shepard's always hacking/bypassing/disarming nukes regardless of class, so being able to overload shields and set up defence drones isn't that far fetched. But not once does Shepard ever throw a warp or preform a lift.