So what is it actually using?
/vminfo; which vm/game.qvm; which game.so

Something like making kill rewards (credits/evos) inversely proportional to class value could actually be quite interesting. By all means, implement, experiment…

Fixes have been committed, and some updated .debs have been built and released.

Most of these input problems (which are only present in builds using SDL 1.2) are fixed now.

It sounds like you have failing or faulty hardware… not our problem, even if it did start while Unvanquished was running.

The unvanquished .debs depend on libsdl2-2.0-0 where available, libsdl1.2debian otherwise. At present, SDL 2 is, regarding Debian, Ubuntu and derivatives, so far as I'm aware, only found in Debian testing and unstable and Ubuntu 13.10; it seems likely that you'll be using 1.2.

That first log file smells of missing pakJ.pk3.

Here's our twentieth alpha release! Read on for what's new… Stages? Who needs stages?We've removed stages! In their place, upgrades, weapons and alien forms have unlock thresholds; the current state is shown in a bar along the lower edge of the game window, with markers indicating unlock (or re-lock...

Yes – we should try increasing buildings' health by between 25% and 50%, maybe also faster repair (rate should, at least, be increased so repair takes, on average, no more time than at present). Builder defence is the other main problem that I've seen – this often needs either campers or better base...

The inventory could be a list of all equipment and/or classes… ⋅ You have the item – shown as is currently. ⋅ Item is unlocked (but you don't have it) – greyed out. ⋅ Item is locked – add a padlock symbol (even if you currently have it). ⋅ Item is incompatible...