Being a FWD the front tyres will wear quicker as they are involved in acceleration, turning and a large part of braking so if not rotated on a regular basis it's normal for them to worn more than rears. Not necessarily a sign of the car being trashed, uneven wear across the tread is more of an issue as it shows a car being driven for a time with a bad alignment or other suspension issues.
The 'Beaver bar' behind the bumper can be replaced by a repair shop easily so could be an area to negotiate a lower price (Not sure how much a repair would cost).
A cracked wheel is an issue as if it's an alloy it can't be repaired, probably another area you can argue for a lower price as for safety it should really be replaced.
If you have the VIN number there are some places you can check there is no finances owing on car and that it has never been a statutory write off.
There have been some recalls on the Lancers in past history:
https://www.productsafety.gov.au/recall/mitsubishi-motors-australia-limited-various-mitsubishi-models-pb-pc-challenger-ga-gb-i-miev-cj-lancer-sedan-sportback-zg-zh-outlander-ns-nt-nw-nx-pajero-ml-mn-tritonhttps://www.productsafety.gov.au/recall/mitsubishi-motors-australia-limited-09-10my-lancer-sedan-lancer-sport-back-and-outlanderhttps://www.productsafety.gov.au/recall/mitsubishi-cj-model-lancer-vehicles-inspect-replace-tyreshttps://www.productsafety.gov.au/recall/mitsubishi-lancer-and-outlander-model-vehiclesAnd I think there was also a serpentine belt recall too.
http://clubcj.net/viewtopic.php?t=17097If it's been serviced at a dealer then these and other issues should be sorted, you could possibly take the VIN number to a dealer or Mitsubishi and find out.
The Lancers unfortunately don't have any warranty that will transfer to anyone after the original owner so it might be an idea to see if you can get a mechanics report to make sure all is ok.
But the Lancer is fairly solid in terms of wear and tear and the VRX has effectively been the same car (fully optioned) since its' introduction (except 2.0 vs 2.4 litre engines as already mentioned).