If anyone is stuck, the Gadgets you can Unlock are:
1 - Frag Grenade
2 - Incendiady Charge
3 - Cryo Grenade
4 - Matter Duplicator
5 - Chemical Charge
6 - Limpet Grenade
7 - Arc Grenade
8 - Singularity Grenade
9 - Health Field
10 - Ammo Field
11 - Launch Pad
You can find all of them in different places, the screenshots are just in case you can't find that specific one