Hello.
I have playde Gun Metal.
It is rather arcade game with "Super Robot" like mech.
In mecha mode mech have personal shield/force field, like in Halo.
If i remembre correctly Q key is rsponslble for transforming into jet, with is very fast and agile, but lack shields.
Of course. there are variety of diffrent weapons that player can if i remember correctly, buy between missions for accumulated cash.
In my opinin game should be available on gog, but for some reason it is not, while it is in Steam and ZOOM platform store.
I hope i helped somehow.
Best regards
Mateuszy
EDIT: Of course game is lacking in some fields. It has only camping mode, and in my opinion it should have something like horde / endless vaves mode - Player, some pool of credits for weapons, endless waves of enemies and leaderboard. Unfortunately nothing like that exist if i am correct.
Post edited October 05, 2020 by Mateuszy