Worms Rumble

Game is pretty much dead right now, so you cant get most of the achievements. From what I have tested, I found that these two achievements are the only ones that you can get in offline mode a.k.a. Training mode. I tried testing the rolling and falling achievements, but the stats would not change while in training mode.

Boot Camp:
Select the training mode and follow the instructions.

Express Yourself:
Go to training mode and do an emote, I know that on keyboard and mouse it is the "C" key. If you got controller check the settings.

There are 10 weapons which you can do kills with, here are how to get them and in which container

1 - Bazooka - green crate
2 - Assault Rifle - Could be given when spawning or could be found in Green Crate.
3 - Shotgun - Could be given when spawning or could be found in Green Crate.
4 - Baseball bat - Given when spawning everytime. Press RMB (Right Mouse Button) to kill with it.
5 - Hand Canon - Could be given when spawning or could be found in Green Crate.
6 - Sheep Launcher - Could be found in Blue Crate.
7 - **Plasma Blaster **- Could be found in Blue Crate
8 - Rocket Shield - Could be found in Blue Crate
9 - Sentry Launcher - Could be found in Blue or Red Crates
10 - Hammerhead - Could be found in Red Crate

Grenades:

Holy Grenade: Red Crate
Banana bomb - Blue Crate
Grenade - Green Crate

All of those could be picked up after killing a player carrying 2 of those weapons + 1 type of grenade