Pickaxes and jackhammers are great, but sometimes you want to go through a wall in less than half to a full hour. I know you can try to blow up a wall but having an armed explosive next to it but sometimes it doesn’t work. I propose explosives that you can stick to or insert into walls to remove their ghastly presence from your bubble of existence so that you can proceed to looting poste-haste. With the added bonus of allerting every life form for miles to your relative position and proximity-based safety hazards, of course.
Ideas for application:
Dynamite: Use a hand or electric drill for a minute or two to drill a small hole into the space you plan to blow up and then drop a stick of dynamite in it. Light it up while it’s in the hole next to you then and run for cover, lest you wish to be part of the rubble. Will likely only be used on normal walls and rock walls underground while mining.
High grade and low grade C4: Attach and arm the C4 to whatever you want and then with a remote or timer set it off. Low grade for use on locked metal doors and high grade for more stubborn things like walls and the reinforced steel you find in labs and such.