Couple teasers on what you have coming.

Flak Jacket - Self Armor Buff of ~346 with 20 charges. Everytime you get hit the buff reduces itself until after 20 it is gone. Gives you a lot more survivability

Fragmentation Grenade - AoE Dot that does 300 Corp damage per target over 15 seconds. Stack that with your Acid Grenade (which does a Corp resist debuff) for nice damage

Land Mine - Bugs alot, unfortunately, but when tripped off does an AOE knockdown for all enemies withing 30 ft of it - for 2 seconds

Flashbang Grenade - AOE spell interrupt, 30′ range

Also, your turrets get an extra special attack upgrade. Flame turret gets ‘Steam Vent’ which is a PBAOE available every 7 seconds. Your Gun turret gets ‘Machine Gun’ which fires off successive rounds quickly. Again, the class did feel pretty bland the first 10 levels but towards 20 gets a lot of flavorful abilities and skills. I went down the path of the tinkerer which gives a tactic as its first reward that lets you instantly deploy turrets - long term plans are going the path of the grenadier though.

Fun thing to try: Once you get steam vent on your flame turret, you become a fun little self contained AOE grinder. At 18 I could take 4-5 level 15 PQ mobs at once, great for grinding out INF. Flak Jacket yourself, pull to flame turret, once enemies get there, Acid Grenade debuff, Frag grenate, Melee AOE skill (forget the name) then shotgun them down. Wheeeee!