Different Play modes

I've experimented with trying different GameModes and default Pawn classes for the Player from the Unreal Marketplace, and so far have found some where I can damage the AI, and some where the AI can damage the player, but so far none that are mutual.

Here's a little rundown of the Marketplace assets I've been playing with in the Sheffield map while trying to explore a framework to base the game on.

I've also explored vehicles, because a lot of people that I show my game to, they immediately ask about driving cars....
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Music:
Aarthos ft. Fruitymasterz - Sunshine (Hardstyle)
https://youtu.be/Q37DuW-L2ic
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Resources:
Military Style Mannequins
https://unrealengine.com/marketplace/en-US/product/c456f4551dc9416cb9370707450f980e

Advanced Shooter Game
https://unrealengine.com/marketplace/en-US/product/advanced-shooter-game

TPS Multiplayer Pack
https://unrealengine.com/marketplace/en-US/product/tps-starter-pack-01
(Additional 'Advance cover' animations available)
https://unrealengine.com/marketplace/en-US/product/advance-cover-animations

Vehicle Variety Pack
https://unrealengine.com/marketplace/en-US/product/bbcb90a03f844edbb20c8b89ee16ea32